R. Thomas, D. Lunt, M. Atkinson, J. Quinta da Fonseca, M. Preuss, Fiona Barton, J. O'Hanlon, P. Frankel
{"title":"The Effect of Loading Direction on Slip and Twinning in an Irradiated Zirconium Alloy","authors":"R. Thomas, D. Lunt, M. Atkinson, J. Quinta da Fonseca, M. Preuss, Fiona Barton, J. O'Hanlon, P. Frankel","doi":"10.1520/stp162220190027","DOIUrl":"https://doi.org/10.1520/stp162220190027","url":null,"abstract":"","PeriodicalId":24038,"journal":{"name":"Zirconium in the Nuclear Industry: 19th International Symposium","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-07-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90668171","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}
C. Daniel, P. Jedrasiak, Christian J. Peyton, J. Quinta da Fonseca, H. Shercliff, Luke Bradley, P. Honniball
Compression dilatometer tests were used to study the hot deformation response of a Zr-2.5Nb alloy over the temperature range 650°C – 850°C and strain rates of 10 #$.& s #) – 10 +) s #) . A high number of test conditions was used (72, with every test duplicated), in order to assess how differences in data processing influence the resulting relationships between flow stress, temperature and strain-rate. Particular attention was paid to ‘processing maps’, showing strain-rate sensitivity over the processing domain, commonly cited in the field and widely used as a basis to determine optimum processing conditions. Significant variations in these maps were found to depend on the number of data-points included and the fitting procedure used to smooth the data. A finite element (FE) model of the test demonstrates the order of the corrections that can be required to the flow stress and the consequent processing maps due to friction at the platen-workpiece interface, and non-uniform temperature and deformation in the test piece. Changes in crystallographic texture, measured using electron-backscatter diffraction (EBSD), illustrate the effect of temperature, strain and strain-rate on the deformation, phase transformation and recrystallization mechanisms. A significant spread in response arises as a result of variation in micro-texture between samples and the tendency for flow to localise, giving rise to scatter in the measurements and generating artefacts in the processing map. Although the processing map methodology is strongly affected by experimental uncertainty, a detailed analysis of the final microstructures in the test samples show similar features to those produced during industrial-scale processing, providing insight into the deformation mechanisms in dual-phase Zr-Nb alloys.
采用压缩膨胀试验研究了Zr-2.5Nb合金在650℃~ 850℃温度范围内、应变速率为10 #$的热变形响应。& s #) - 10 +) s #)。使用了大量的测试条件(72个，每个测试重复)，以评估数据处理的差异如何影响流动应力、温度和应变率之间的关系。特别注意的是“加工图”，显示了加工领域的应变率敏感性，通常在该领域被引用，并被广泛用作确定最佳加工条件的基础。发现这些图中的显著变化取决于所包含的数据点的数量和用于平滑数据的拟合程序。试验的有限元(FE)模型演示了由于压板-工件界面的摩擦以及试件中的不均匀温度和变形，可能需要对流动应力和随后的加工图进行修正的顺序。利用电子背散射衍射(EBSD)测量了晶体织构的变化，说明了温度、应变和应变速率对变形、相变和再结晶机制的影响。由于样品之间微观纹理的变化和流向局部化的趋势，导致测量结果分散，并在处理图中产生伪影，从而产生显著的响应扩散。尽管加工图方法受到实验不确定性的强烈影响，但对测试样品中最终微观结构的详细分析显示出与工业规模加工过程中产生的相似特征，从而为双相Zr-Nb合金的变形机制提供了见解。
{"title":"Quantifying Processing Map Uncertainties by Modeling the Hot-Compression Behavior of a Zr-2.5Nb Alloy","authors":"C. Daniel, P. Jedrasiak, Christian J. Peyton, J. Quinta da Fonseca, H. Shercliff, Luke Bradley, P. Honniball","doi":"10.1520/stp162220190031","DOIUrl":"https://doi.org/10.1520/stp162220190031","url":null,"abstract":"Compression dilatometer tests were used to study the hot deformation response of a Zr-2.5Nb alloy over the temperature range 650°C – 850°C and strain rates of 10 #$.& s #) – 10 +) s #) . A high number of test conditions was used (72, with every test duplicated), in order to assess how differences in data processing influence the resulting relationships between flow stress, temperature and strain-rate. Particular attention was paid to ‘processing maps’, showing strain-rate sensitivity over the processing domain, commonly cited in the field and widely used as a basis to determine optimum processing conditions. Significant variations in these maps were found to depend on the number of data-points included and the fitting procedure used to smooth the data. A finite element (FE) model of the test demonstrates the order of the corrections that can be required to the flow stress and the consequent processing maps due to friction at the platen-workpiece interface, and non-uniform temperature and deformation in the test piece. Changes in crystallographic texture, measured using electron-backscatter diffraction (EBSD), illustrate the effect of temperature, strain and strain-rate on the deformation, phase transformation and recrystallization mechanisms. A significant spread in response arises as a result of variation in micro-texture between samples and the tendency for flow to localise, giving rise to scatter in the measurements and generating artefacts in the processing map. Although the processing map methodology is strongly affected by experimental uncertainty, a detailed analysis of the final microstructures in the test samples show similar features to those produced during industrial-scale processing, providing insight into the deformation mechanisms in dual-phase Zr-Nb alloys.","PeriodicalId":24038,"journal":{"name":"Zirconium in the Nuclear Industry: 19th International Symposium","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83212550","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}
Z. Hózer, I. Nagy, Róbert Farkas, N. Vér, M. Horváth, T. Novotny, E. Perez-Feró, Márton Király, Z. Kis, B. Maróti, L. Szentmiklósi, Péter Holecz, György Auguszt, G. Gémes
{"title":"Experimental Simulation of the Behavior of E110 Claddings under Accident Conditions Using Electrically Heated Bundles","authors":"Z. Hózer, I. Nagy, Róbert Farkas, N. Vér, M. Horváth, T. Novotny, E. Perez-Feró, Márton Király, Z. Kis, B. Maróti, L. Szentmiklósi, Péter Holecz, György Auguszt, G. Gémes","doi":"10.1520/stp162220190010","DOIUrl":"https://doi.org/10.1520/stp162220190010","url":null,"abstract":"","PeriodicalId":24038,"journal":{"name":"Zirconium in the Nuclear Industry: 19th International Symposium","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89283169","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}
E. Lacroix, Pierre-Clément A. Simon, A. Motta, J. Almer
{"title":"Zirconium Hydride Precipitation and Dissolution Kinetics in Zirconium Alloys","authors":"E. Lacroix, Pierre-Clément A. Simon, A. Motta, J. Almer","doi":"10.1520/stp162220190035","DOIUrl":"https://doi.org/10.1520/stp162220190035","url":null,"abstract":"","PeriodicalId":24038,"journal":{"name":"Zirconium in the Nuclear Industry: 19th International Symposium","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76547419","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}
Christopher Jones, Kexue Li, Junliang Liu, T. Aarholt, M. Gass, K. Moore, M. Preuss, C. Grovenor
{"title":"High Resolution Mapping of Light Elements in Zirconium Oxide with SIMS","authors":"Christopher Jones, Kexue Li, Junliang Liu, T. Aarholt, M. Gass, K. Moore, M. Preuss, C. Grovenor","doi":"10.1520/stp162220190037","DOIUrl":"https://doi.org/10.1520/stp162220190037","url":null,"abstract":"","PeriodicalId":24038,"journal":{"name":"Zirconium in the Nuclear Industry: 19th International Symposium","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88836949","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}
J. Desquines, M. Puls, Stéphane Charbaut, March Philippe
{"title":"Influence of Thermomechanical Cycling on Prehydrogenated Zircaloy-4 Embrittlement by Radial Hydrides","authors":"J. Desquines, M. Puls, Stéphane Charbaut, March Philippe","doi":"10.1520/stp162220190006","DOIUrl":"https://doi.org/10.1520/stp162220190006","url":null,"abstract":"","PeriodicalId":24038,"journal":{"name":"Zirconium in the Nuclear Industry: 19th International Symposium","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85680697","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}
Samuel A. J. Armson, A. Garner, Felicity Baxter, M. Yankova, C. Race, A. Cole-Baker, Christopher Riley, M. Preuss, P. Frankel
{"title":"The Importance of Substrate Grain Orientation on Local Oxide Texture and Corrosion Performance in α-Zr Alloys","authors":"Samuel A. J. Armson, A. Garner, Felicity Baxter, M. Yankova, C. Race, A. Cole-Baker, Christopher Riley, M. Preuss, P. Frankel","doi":"10.1520/stp162220190057","DOIUrl":"https://doi.org/10.1520/stp162220190057","url":null,"abstract":"","PeriodicalId":24038,"journal":{"name":"Zirconium in the Nuclear Industry: 19th International Symposium","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87709654","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}
{"title":"Corrosion and Deuterium Pickup in Zr-2.5Nb: Twenty Years of In-Reactor Testing at the OECD Halden Boiling Water Reactor","authors":"H. Nordin, R. Szőke","doi":"10.1520/stp162220190017","DOIUrl":"https://doi.org/10.1520/stp162220190017","url":null,"abstract":"","PeriodicalId":24038,"journal":{"name":"Zirconium in the Nuclear Industry: 19th International Symposium","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82598531","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}
{"title":"Full-Scale Fracture Toughness Behavior of Zr-2.5Nb Pressure Tubes with High Hydrogen Concentrations and Different Hydride Morphologies","authors":"J. Cui, G. Shek","doi":"10.1520/stp162220190015","DOIUrl":"https://doi.org/10.1520/stp162220190015","url":null,"abstract":"","PeriodicalId":24038,"journal":{"name":"Zirconium in the Nuclear Industry: 19th International Symposium","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82820694","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}
{"title":"Influence of Hydrides upon the Fatigue Initiation Behavior of Irradiated Zircaloy-2","authors":"P. Honniball, Lucile Cogez, Charles F. Gee","doi":"10.1520/stp162220190026","DOIUrl":"https://doi.org/10.1520/stp162220190026","url":null,"abstract":"","PeriodicalId":24038,"journal":{"name":"Zirconium in the Nuclear Industry: 19th International Symposium","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78609324","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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