Pub Date : 1984-04-01DOI: 10.1179/030634584790420203
R. Sandström, Y. Bergström
Abstract A simple theory for the Charpy V transition temperature T CV in mild steel is proposed. The yield stress σy and the internal cleavage fracture stress σf play an important role in the theory and, therefore, have been the subject of detailed experimental and theoretical studies. Experimentally recorded values of T CV in a C-Mn steel of varying grain size and a microalloyed steel are compared with the corresponding theoretical values. The results are critically discussed.
{"title":"Relationship between Charpy V transition temperature in mild steel and various material parameters","authors":"R. Sandström, Y. Bergström","doi":"10.1179/030634584790420203","DOIUrl":"https://doi.org/10.1179/030634584790420203","url":null,"abstract":"Abstract A simple theory for the Charpy V transition temperature T CV in mild steel is proposed. The yield stress σy and the internal cleavage fracture stress σf play an important role in the theory and, therefore, have been the subject of detailed experimental and theoretical studies. Experimentally recorded values of T CV in a C-Mn steel of varying grain size and a microalloyed steel are compared with the corresponding theoretical values. The results are critically discussed.","PeriodicalId":18750,"journal":{"name":"Metal science","volume":"8 1","pages":"177-186"},"PeriodicalIF":0.0,"publicationDate":"1984-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87361521","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1984-04-01DOI: 10.1179/030634584790420140
S. Chakravorty, D. West
AbstractAn investigation has been made of the constitution of the Ni rich portion of the Ni-Al-Mo-Ta system using alloys lying in the 85 and 75 at.-%Ni sections of the system. Observations are reported of alloys in the as-cast condition and also after annealing at 1523 K; the results of electron probe microanalysis, X-ray diffraction, and microscopical examination of the annealed alloys are presented as isothermal sections. The phases encountered in equilibrium in the composition range studied are as follows: the Ni based solid solution γ and intermetallic compounds based on Ni3Al(γ′), Ni3Ta(δ), and Ni6TaAI(η). The 85 at.-%Ni section is predominantly single phase γ at 1523 K. In the 75 at.-%Ni section, γ enters into equilibrium with γ′ and δ;γ′ enters into equilibrium with γ, η, and δ to form γ + γ′ + δ and γ′ + η + δ phase regions. In the two phase γ + γ′ region, lattice parameter mismatch values lie in the range 0.56–0.81%. In the as-cast condition, some alloys show regions which are interpreted as cont...
摘要用85和75 at合金研究了Ni- al - mo - ta体系中富Ni部分的组成。-%Ni部分的系统。报告了合金在铸态和1523k退火条件下的观察结果;退火合金的电子探针显微分析、x射线衍射和显微检查结果以等温切片的形式呈现。在所研究的成分范围内，达到平衡的相有:Ni基固溶体γ和基于Ni3Al(γ′)、Ni3Ta(δ)和Ni6TaAI(η)的金属间化合物。85英里。-%Ni截面在1523k时主要为单相γ。在75年代。-%Ni截面，γ与γ′、δ进入平衡，γ′与γ、η、δ进入平衡，形成γ + γ′+ δ和γ′+ η + δ相区。在两相γ + γ′区，晶格参数失配值在0.56 ~ 0.81%之间。在铸态下，有些合金显示出被解释为连铸态的区域。
{"title":"Constitution of Ni rich alloys in Ni−Al−Mo−Ta system at 1523 K","authors":"S. Chakravorty, D. West","doi":"10.1179/030634584790420140","DOIUrl":"https://doi.org/10.1179/030634584790420140","url":null,"abstract":"AbstractAn investigation has been made of the constitution of the Ni rich portion of the Ni-Al-Mo-Ta system using alloys lying in the 85 and 75 at.-%Ni sections of the system. Observations are reported of alloys in the as-cast condition and also after annealing at 1523 K; the results of electron probe microanalysis, X-ray diffraction, and microscopical examination of the annealed alloys are presented as isothermal sections. The phases encountered in equilibrium in the composition range studied are as follows: the Ni based solid solution γ and intermetallic compounds based on Ni3Al(γ′), Ni3Ta(δ), and Ni6TaAI(η). The 85 at.-%Ni section is predominantly single phase γ at 1523 K. In the 75 at.-%Ni section, γ enters into equilibrium with γ′ and δ;γ′ enters into equilibrium with γ, η, and δ to form γ + γ′ + δ and γ′ + η + δ phase regions. In the two phase γ + γ′ region, lattice parameter mismatch values lie in the range 0.56–0.81%. In the as-cast condition, some alloys show regions which are interpreted as cont...","PeriodicalId":18750,"journal":{"name":"Metal science","volume":"51 1","pages":"207-215"},"PeriodicalIF":0.0,"publicationDate":"1984-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86694777","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1984-03-01DOI: 10.1179/MSC.1984.18.3.137
K. Kuchařová, F. Dobeš, A. Orlová, K. Milička, J. Čadek
AbstractResults of an investigation of creep in a Cu-2Fe alloy strengthened by coherent γ iron particles in the temperature region 673–873 K and the stress region 10–95 MN m−2 are presented and discussed. It is found that, most probably, the Coble diffusion deformation mechanism associated with a threshold stress dominates at low stresses. The thermally activated cutting of γ iron particles, dependent on the creation of a new interface area, has been suggested as another possible mechanism controlling the steady state creep rate in all external conditions. This mechanism probably dominates at least at high stresses. The intergranular creep fracture in the alloy investigated is probably controlled by the same mechanisms as creep itself.
{"title":"High temperature creep in precipitation strengthened Cu-2Fe alloy","authors":"K. Kuchařová, F. Dobeš, A. Orlová, K. Milička, J. Čadek","doi":"10.1179/MSC.1984.18.3.137","DOIUrl":"https://doi.org/10.1179/MSC.1984.18.3.137","url":null,"abstract":"AbstractResults of an investigation of creep in a Cu-2Fe alloy strengthened by coherent γ iron particles in the temperature region 673–873 K and the stress region 10–95 MN m−2 are presented and discussed. It is found that, most probably, the Coble diffusion deformation mechanism associated with a threshold stress dominates at low stresses. The thermally activated cutting of γ iron particles, dependent on the creation of a new interface area, has been suggested as another possible mechanism controlling the steady state creep rate in all external conditions. This mechanism probably dominates at least at high stresses. The intergranular creep fracture in the alloy investigated is probably controlled by the same mechanisms as creep itself.","PeriodicalId":18750,"journal":{"name":"Metal science","volume":"8 1","pages":"137-142"},"PeriodicalIF":0.0,"publicationDate":"1984-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80393361","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1984-03-01DOI: 10.1179/MSC.1984.18.3.153
F. Sachslehner, V. Gröger, F. Stangler
AbstractSamples of the commercial alloy Cu-2Be were aged at 325, 280, 250, and 230°C in a high purity helium atmosphere. Vickers micro hardness testing was carried out taking advantage of the fact that in the case of this very fine grained alloy the microhardness is almost independent of load. It is shown that a precise microhardness measurement when combined with an electrical resistance measurement is highly suitable for investigations of the GP zone stage and the γ′ phase. Isotherms of microhardness indicate the beginning of growth of the γ′ phase by a marked steepening of their slopes. The maximum hardness can be taken as a measure of the completion of the hardening process. Isotherms of the change in electrical resistance show two other significant points: the resistance maximum which records the GP zone density, and thereafter the intersection of the resistance curve with the abscissa which indicates a time related to the disappearance of GP zones.
{"title":"Investigation of precipitation hardening in Cu-2Be-0.2Co by Vickers microhardness and electrical resistance","authors":"F. Sachslehner, V. Gröger, F. Stangler","doi":"10.1179/MSC.1984.18.3.153","DOIUrl":"https://doi.org/10.1179/MSC.1984.18.3.153","url":null,"abstract":"AbstractSamples of the commercial alloy Cu-2Be were aged at 325, 280, 250, and 230°C in a high purity helium atmosphere. Vickers micro hardness testing was carried out taking advantage of the fact that in the case of this very fine grained alloy the microhardness is almost independent of load. It is shown that a precise microhardness measurement when combined with an electrical resistance measurement is highly suitable for investigations of the GP zone stage and the γ′ phase. Isotherms of microhardness indicate the beginning of growth of the γ′ phase by a marked steepening of their slopes. The maximum hardness can be taken as a measure of the completion of the hardening process. Isotherms of the change in electrical resistance show two other significant points: the resistance maximum which records the GP zone density, and thereafter the intersection of the resistance curve with the abscissa which indicates a time related to the disappearance of GP zones.","PeriodicalId":18750,"journal":{"name":"Metal science","volume":"42 1","pages":"153-157"},"PeriodicalIF":0.0,"publicationDate":"1984-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81035936","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1984-03-01DOI: 10.1179/MSC.1984.18.3.161
A. H. Yegneswaran, K. Tangri
Abstract A study has been made of the deformation behaviour of a series of dual phase (α + β′) and α + eutectoid Cu-Al alloys. The effect of martensite or eutectoid as the second phase on flow stress, work hardening, and total elongation is described. It is seen that the strengthening effect of martensite becomes greater than that of eutectoid at larger strains. Analysis of stress–strain curves shows that the strain hardening exponent n changes continuously with strain and, as such, the analysis based on the Ludwik equation (σ = σ0 + k′ep n′) is performed. It is found that alloys showing higher ductility exhibit a three stage behaviour. An explanation for this stage behaviour in terms of the deformation mechanisms involved is presented.
摘要:研究了一系列双相(α + β′)和α +共析Cu-Al合金的变形行为。描述了马氏体或共析体作为第二相对流动应力、加工硬化和总伸长率的影响。在较大的应变下，马氏体的强化作用大于共析体。应力-应变曲线分析表明，应变硬化指数n随应变的变化是连续的，基于Ludwik方程(σ = σ0 + k ' ep n ')进行分析。结果表明，具有较高延展性的合金表现为三阶段行为。根据所涉及的变形机制，提出了对这一阶段行为的解释。
{"title":"Deformation behaviour of two phase materials: Cu-Al system","authors":"A. H. Yegneswaran, K. Tangri","doi":"10.1179/MSC.1984.18.3.161","DOIUrl":"https://doi.org/10.1179/MSC.1984.18.3.161","url":null,"abstract":"Abstract A study has been made of the deformation behaviour of a series of dual phase (α + β′) and α + eutectoid Cu-Al alloys. The effect of martensite or eutectoid as the second phase on flow stress, work hardening, and total elongation is described. It is seen that the strengthening effect of martensite becomes greater than that of eutectoid at larger strains. Analysis of stress–strain curves shows that the strain hardening exponent n changes continuously with strain and, as such, the analysis based on the Ludwik equation (σ = σ0 + k′ep n′) is performed. It is found that alloys showing higher ductility exhibit a three stage behaviour. An explanation for this stage behaviour in terms of the deformation mechanisms involved is presented.","PeriodicalId":18750,"journal":{"name":"Metal science","volume":"23 1","pages":"161-168"},"PeriodicalIF":0.0,"publicationDate":"1984-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85308075","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1984-03-01DOI: 10.1179/MSC.1984.18.3.158
A. Klee, M. Grabski
AbstractIt is shown by differential scanning calorimetry and transmission electron microscopy that extensive plastic deformation of Al-4Cu (wt-%) alloy following quenching causes fragmentation of GP zones to an extent which depends on strain. Subsequent continuous heating of samples causes two concurrent processes: dissolution of small and growth of large GP zones. The fragmentation after 33% strain is so extensive that no growth process was observed. The activation energy for dissolution of GP zones in unstrained and strained material is 126 ± 6 kJ mol−1 and about 100 kJ mol−1 respectively.
{"title":"Stability of GP zones in plastically deformed Al-4Cu alloy","authors":"A. Klee, M. Grabski","doi":"10.1179/MSC.1984.18.3.158","DOIUrl":"https://doi.org/10.1179/MSC.1984.18.3.158","url":null,"abstract":"AbstractIt is shown by differential scanning calorimetry and transmission electron microscopy that extensive plastic deformation of Al-4Cu (wt-%) alloy following quenching causes fragmentation of GP zones to an extent which depends on strain. Subsequent continuous heating of samples causes two concurrent processes: dissolution of small and growth of large GP zones. The fragmentation after 33% strain is so extensive that no growth process was observed. The activation energy for dissolution of GP zones in unstrained and strained material is 126 ± 6 kJ mol−1 and about 100 kJ mol−1 respectively.","PeriodicalId":18750,"journal":{"name":"Metal science","volume":"38 1","pages":"158-160"},"PeriodicalIF":0.0,"publicationDate":"1984-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81906566","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1984-03-01DOI: 10.1179/MSC.1984.18.3.117
J. Pilling, D. W. Livesey, J. Hawkyard, N. Ridley
AbstractThe time taken to produce a bond between two sheets of superplastic Ti-6Al-4V has been calculated using existing theories of high temperature cavity growth and of sintering. The predicted conditions for bonding have been compared with those determined experimentally, and a theory based on the Chen and Argon model of creep cavity growth has been developed to take into account the effect of a material grain size which can be substantially smaller than either the cavity size or the original surface roughness. It has been found that high integrity bonds can be produced at 927°C with pressures between 0.7 and 2 MPa (100–300 lb in−2), and within a time scale of the order of 0.5–4 h.
摘要利用现有的高温空腔生长理论和烧结理论，计算了两层超塑性Ti-6Al-4V之间产生键合所需的时间。将预测的键合条件与实验结果进行了比较，并建立了基于Chen和Argon蠕变空洞生长模型的理论，该理论考虑了材料晶粒尺寸的影响，该尺寸可以比空洞尺寸或原始表面粗糙度小得多。研究发现，在927℃、0.7 - 2mpa (100-300 lb in - 2)的压力下，在0.5 - 4h的时间尺度内，可以形成高完整性的键。
{"title":"Solid state bonding in superplastic Ti-6Al-4V","authors":"J. Pilling, D. W. Livesey, J. Hawkyard, N. Ridley","doi":"10.1179/MSC.1984.18.3.117","DOIUrl":"https://doi.org/10.1179/MSC.1984.18.3.117","url":null,"abstract":"AbstractThe time taken to produce a bond between two sheets of superplastic Ti-6Al-4V has been calculated using existing theories of high temperature cavity growth and of sintering. The predicted conditions for bonding have been compared with those determined experimentally, and a theory based on the Chen and Argon model of creep cavity growth has been developed to take into account the effect of a material grain size which can be substantially smaller than either the cavity size or the original surface roughness. It has been found that high integrity bonds can be produced at 927°C with pressures between 0.7 and 2 MPa (100–300 lb in−2), and within a time scale of the order of 0.5–4 h.","PeriodicalId":18750,"journal":{"name":"Metal science","volume":"4 1","pages":"117-122"},"PeriodicalIF":0.0,"publicationDate":"1984-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87045114","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1984-03-01DOI: 10.1179/MSC.1984.18.3.143
H. Shang, M. Suéry
Abstract Superplastic materials are characterized by their ability to undergo exceptionally large deformation under low stresses. Many alloys, however, are prone to cavitation, which leads to premature failure even though deformation is within the superplastic regime. A model is presented which analyses the evolution of pre-existing cavities in two phase alloys subjected to uniaxial stress systems. It is seen that this model adequately describes the cavitation phenomenon of α–β brasses and microduplex Cu-Zn-Ni alloys in the tensile test. Closure of cavities in the compression test may also be described by this model. The results obtained thus enable the formation of an overall view of the behaviour of a two phase superplastic alloy subjected to the uniaxial tension test, and the difference in cavity evolution of different materials.
{"title":"Modelling of cavitation in two phase superplastic alloys under uniaxial stress systems","authors":"H. Shang, M. Suéry","doi":"10.1179/MSC.1984.18.3.143","DOIUrl":"https://doi.org/10.1179/MSC.1984.18.3.143","url":null,"abstract":"Abstract Superplastic materials are characterized by their ability to undergo exceptionally large deformation under low stresses. Many alloys, however, are prone to cavitation, which leads to premature failure even though deformation is within the superplastic regime. A model is presented which analyses the evolution of pre-existing cavities in two phase alloys subjected to uniaxial stress systems. It is seen that this model adequately describes the cavitation phenomenon of α–β brasses and microduplex Cu-Zn-Ni alloys in the tensile test. Closure of cavities in the compression test may also be described by this model. The results obtained thus enable the formation of an overall view of the behaviour of a two phase superplastic alloy subjected to the uniaxial tension test, and the difference in cavity evolution of different materials.","PeriodicalId":18750,"journal":{"name":"Metal science","volume":"54 1","pages":"143-152"},"PeriodicalIF":0.0,"publicationDate":"1984-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73484449","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1984-03-01DOI: 10.1179/MSC.1984.18.3.127
J. Sheasby, W. Boggs, E. T. Turkdogan
Abstract High purity zone refined iron and low alloy steels (<0.3%C) were oxidized at 1200°C in O2–N2, O2-H2O-N2, and H2O-N2 gas mixtures to elucidate the kinetics and morphology of scale growth on steel under conditions which simulated reheating furnaces. A few oxidation experiments were made with pure iron at 700 and 950°C. The present findings shed additional light on the effect of water vapour in the oxidizing furnace atmosphere on the rate of oxidation of pure iron and Fe-C alloys. In the absence of water vapour, scale detachment caused the Fe-C alloys to be oxidized at a lower rate. In oxidizing gas mixtures containing water vapour, the scale remained attached to the metal surface for considerably longer reaction times, and the scale growth progressed in accordance with the parabolic rate for pure iron. These findings substantiate those of earlier studies and imply that the presence of water vapour in the oxidizing gas enhances the rate of creep in the scale. It was found that with water vapour pres...
{"title":"Scale growth on steels at 1200°C: rationale of rate and morphology","authors":"J. Sheasby, W. Boggs, E. T. Turkdogan","doi":"10.1179/MSC.1984.18.3.127","DOIUrl":"https://doi.org/10.1179/MSC.1984.18.3.127","url":null,"abstract":"Abstract High purity zone refined iron and low alloy steels (<0.3%C) were oxidized at 1200°C in O2–N2, O2-H2O-N2, and H2O-N2 gas mixtures to elucidate the kinetics and morphology of scale growth on steel under conditions which simulated reheating furnaces. A few oxidation experiments were made with pure iron at 700 and 950°C. The present findings shed additional light on the effect of water vapour in the oxidizing furnace atmosphere on the rate of oxidation of pure iron and Fe-C alloys. In the absence of water vapour, scale detachment caused the Fe-C alloys to be oxidized at a lower rate. In oxidizing gas mixtures containing water vapour, the scale remained attached to the metal surface for considerably longer reaction times, and the scale growth progressed in accordance with the parabolic rate for pure iron. These findings substantiate those of earlier studies and imply that the presence of water vapour in the oxidizing gas enhances the rate of creep in the scale. It was found that with water vapour pres...","PeriodicalId":18750,"journal":{"name":"Metal science","volume":"10 1","pages":"127-136"},"PeriodicalIF":0.0,"publicationDate":"1984-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88202231","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1984-03-01DOI: 10.1179/MSC.1984.18.3.123
M. Z. Butt, P. Feltham
AbstractThe stress dependence of the activation volume was studied over a range of strains in polycrystalline alpha brasses of various grain sizes containing 10, 15, 20, and 30 at.-%Zn, and in polycrystalline Cu of 4N and 5N purities at 77, 200, and 290 K. The data show that solute atoms are effective obstacles to dislocation glide only up to small percentage values of uniaxial strain; conventional work hardening, i.e. forest cutting, determines the flow stress at higher strains.
{"title":"Work hardening of polycrystalline copper and alpha brasses","authors":"M. Z. Butt, P. Feltham","doi":"10.1179/MSC.1984.18.3.123","DOIUrl":"https://doi.org/10.1179/MSC.1984.18.3.123","url":null,"abstract":"AbstractThe stress dependence of the activation volume was studied over a range of strains in polycrystalline alpha brasses of various grain sizes containing 10, 15, 20, and 30 at.-%Zn, and in polycrystalline Cu of 4N and 5N purities at 77, 200, and 290 K. The data show that solute atoms are effective obstacles to dislocation glide only up to small percentage values of uniaxial strain; conventional work hardening, i.e. forest cutting, determines the flow stress at higher strains.","PeriodicalId":18750,"journal":{"name":"Metal science","volume":"23 1","pages":"123-126"},"PeriodicalIF":0.0,"publicationDate":"1984-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81833057","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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