Pub Date : 1994-03-01DOI: 10.1080/09534962.1994.11819162
A. Er, V. Kondic, M. Sayehbani
Experimental work has been undertaken to study the effects of polystyrene pattern material on the mechanical properties and microstructures of cast aluminium alloys. This paper reports results obta...
本文研究了聚苯乙烯图案材料对铸铝合金力学性能和显微组织的影响。本文报告了…
{"title":"Mechanical properties and microstructures of AlSi7 alloy cast in sand and in polystyrene-containing sand moulds","authors":"A. Er, V. Kondic, M. Sayehbani","doi":"10.1080/09534962.1994.11819162","DOIUrl":"https://doi.org/10.1080/09534962.1994.11819162","url":null,"abstract":"Experimental work has been undertaken to study the effects of polystyrene pattern material on the mechanical properties and microstructures of cast aluminium alloys. This paper reports results obta...","PeriodicalId":9691,"journal":{"name":"Cast Metals","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"1994-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84261633","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 : 1994-03-01DOI: 10.1080/09534962.1994.11819161
F. Paray, J. Gruzleski
The effects of chemical modification and/or heat treatment of 356 alloy have been investigated on both gravity-diecast (permanent mould) and sand cast samples. Sodium (0.01%) and strontium (0.02%) were used to produce well modified microstructures. Undermodification and overmodification were also examined in castings with 0.002% Sr and 0.08% Sr. The use of image analysis coupled with SEM allowed a complete assessment of the microstructural changes occurring in the alloy. Modification changes both the size and the shape of the Si particles. The casting process (solidification rate) affects the size of the eutectic silicon more than the shape. The as-cast microstructure has an influence on the response of 356 alloy to heat treatment. The coarser the initial as-cast microstructure, the larger the microstructural differences between heat treated unmodified and modified alloys. As a result, the benefits of modification are much more important in sand casting than in gravity diecasting.
{"title":"Microstructure—mechanical property relationships in a 356 alloy. Part I: Microstructure","authors":"F. Paray, J. Gruzleski","doi":"10.1080/09534962.1994.11819161","DOIUrl":"https://doi.org/10.1080/09534962.1994.11819161","url":null,"abstract":"The effects of chemical modification and/or heat treatment of 356 alloy have been investigated on both gravity-diecast (permanent mould) and sand cast samples. Sodium (0.01%) and strontium (0.02%) were used to produce well modified microstructures. Undermodification and overmodification were also examined in castings with 0.002% Sr and 0.08% Sr. The use of image analysis coupled with SEM allowed a complete assessment of the microstructural changes occurring in the alloy. Modification changes both the size and the shape of the Si particles. The casting process (solidification rate) affects the size of the eutectic silicon more than the shape. The as-cast microstructure has an influence on the response of 356 alloy to heat treatment. The coarser the initial as-cast microstructure, the larger the microstructural differences between heat treated unmodified and modified alloys. As a result, the benefits of modification are much more important in sand casting than in gravity diecasting.","PeriodicalId":9691,"journal":{"name":"Cast Metals","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"1994-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84975353","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 : 1994-03-01DOI: 10.1080/09534962.1994.11819158
P. Jay, F. Durand, M. Durand-Charre
{"title":"Progressive filling and solidification in centrifugally-spun moulds: A numerical model and its application to chromium—vanadium white cast irons","authors":"P. Jay, F. Durand, M. Durand-Charre","doi":"10.1080/09534962.1994.11819158","DOIUrl":"https://doi.org/10.1080/09534962.1994.11819158","url":null,"abstract":"","PeriodicalId":9691,"journal":{"name":"Cast Metals","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"1994-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79887928","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 : 1994-01-01DOI: 10.1080/09534962.1994.11819148
M. N. Ahmadabadi, E. Niyama, T. Ohide
{"title":"Eutectic Carbide Formation in High Mn Ductile Iron","authors":"M. N. Ahmadabadi, E. Niyama, T. Ohide","doi":"10.1080/09534962.1994.11819148","DOIUrl":"https://doi.org/10.1080/09534962.1994.11819148","url":null,"abstract":"","PeriodicalId":9691,"journal":{"name":"Cast Metals","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"1994-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79611782","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 : 1994-01-01DOI: 10.1080/09534962.1994.11819149
S. Murali, K. S. Raman, K. Murthy
AbstractThe detrimental effect of iron impurity on the mechanical properties and fracture toughness of Al-7Si-0.3Mg alloy has been widely reported. It is also quite evident that Fe forms the intermetallic compound β-FeSiAl5, which exists as needles/plates in the interdendritic regions, thereby lowering the mechanical properties. However, very little is known about the methods of counteracting this detrimental effect. The present study has shown that trace additions of Be, Cr, Mn and Co, individually or combined, tie up the iron to form new phases with altered morphology which significantly influence the mechanical properties. Among the trace additions, Be is found to be most effective in neutralising the detrimental effect of Fe on tensile properties. Hardness, tensile and yield strengths, ductility, dynamic fracture toughness (Kd and, Kjd remain constant with an increase in Fe from 0.1 to 0.93% where Be additions are present. Be additions in combination with Mn and/or Cr are also found to nullify the det...
{"title":"Effect of Trace Additions (Be, Cr, Mn and Co) on the Mechanical Properties and Fracture Toughness of Fe-containing Al-7Si-0.3Mg Alloy","authors":"S. Murali, K. S. Raman, K. Murthy","doi":"10.1080/09534962.1994.11819149","DOIUrl":"https://doi.org/10.1080/09534962.1994.11819149","url":null,"abstract":"AbstractThe detrimental effect of iron impurity on the mechanical properties and fracture toughness of Al-7Si-0.3Mg alloy has been widely reported. It is also quite evident that Fe forms the intermetallic compound β-FeSiAl5, which exists as needles/plates in the interdendritic regions, thereby lowering the mechanical properties. However, very little is known about the methods of counteracting this detrimental effect. The present study has shown that trace additions of Be, Cr, Mn and Co, individually or combined, tie up the iron to form new phases with altered morphology which significantly influence the mechanical properties. Among the trace additions, Be is found to be most effective in neutralising the detrimental effect of Fe on tensile properties. Hardness, tensile and yield strengths, ductility, dynamic fracture toughness (Kd and, Kjd remain constant with an increase in Fe from 0.1 to 0.93% where Be additions are present. Be additions in combination with Mn and/or Cr are also found to nullify the det...","PeriodicalId":9691,"journal":{"name":"Cast Metals","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"1994-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88408927","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 : 1994-01-01DOI: 10.1080/09534962.1994.11819156
Q. Han, J. P. Lindsay, J. D. Hunt
AbstractThe surface energy model, which may govern particle pushing under or near equilibrium solidification conditions, is not valid when convection exists in the liquid. Experiments were carried ...
{"title":"The Effects of Fluid Flow on Particle Pushing","authors":"Q. Han, J. P. Lindsay, J. D. Hunt","doi":"10.1080/09534962.1994.11819156","DOIUrl":"https://doi.org/10.1080/09534962.1994.11819156","url":null,"abstract":"AbstractThe surface energy model, which may govern particle pushing under or near equilibrium solidification conditions, is not valid when convection exists in the liquid. Experiments were carried ...","PeriodicalId":9691,"journal":{"name":"Cast Metals","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"1994-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89423831","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 : 1994-01-01DOI: 10.1080/09534962.1994.11819155
H. Shahverdi, F. Farhadi, A. Karimitaheri, P. Davami, K. Asgari
{"title":"A Mathematical Model for Air-gap Formation at the Metal—Mould Interface in the Computer Simulation of the Solidification of Al—12%Si in a Sand Mould","authors":"H. Shahverdi, F. Farhadi, A. Karimitaheri, P. Davami, K. Asgari","doi":"10.1080/09534962.1994.11819155","DOIUrl":"https://doi.org/10.1080/09534962.1994.11819155","url":null,"abstract":"","PeriodicalId":9691,"journal":{"name":"Cast Metals","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"1994-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83553373","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 : 1994-01-01DOI: 10.1080/09534962.1994.11819151
M. K. Banerjee
{"title":"Effect of Melt Homogeneity on the Age-hardening of Copper-Chromium Alloys","authors":"M. K. Banerjee","doi":"10.1080/09534962.1994.11819151","DOIUrl":"https://doi.org/10.1080/09534962.1994.11819151","url":null,"abstract":"","PeriodicalId":9691,"journal":{"name":"Cast Metals","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"1994-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87702761","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 : 1994-01-01DOI: 10.1080/09534962.1994.11819154
H. Sōda, G. Motoyasu, F. Chabchoub, H. Hu, A. Mclean
AbstractTin wires of 2 mm dia have been cast by the horizontal OCC process at speeds between 0.02 m/min and 4.2 m/min. It was found that unlike the casting of larger diameter rods, it was possible to continue casting, even if the solid-liquid interface existed outside the mould. If the mould exit temperature and the mould-cooler distance were maintained at 267°C and 2 mm respectively, the solid-liquid interface was located at the mould exit when the casting speed was 0.35 m/mln. However, when the casting speed exceeded about 1.2 m/min, the cast surface of the wire deteriorated and exhibited a matted appearance due to the formation of ridges. With a casting speed of 4.2 m/min, the solid-liquid interface location was estimated to be about 4 mm outside the mould. A calculated temperature distribution within the solidifying strand revealed that the solid-liquid interface entered the cooling water when the casting speed was 1.2 m/min. Thus, in order to obtain a cast wire with a high surface finish, the strand ...
{"title":"Casting a Small-diameter Tin Wire by the OCC (Ohno Continuous Casting) Process","authors":"H. Sōda, G. Motoyasu, F. Chabchoub, H. Hu, A. Mclean","doi":"10.1080/09534962.1994.11819154","DOIUrl":"https://doi.org/10.1080/09534962.1994.11819154","url":null,"abstract":"AbstractTin wires of 2 mm dia have been cast by the horizontal OCC process at speeds between 0.02 m/min and 4.2 m/min. It was found that unlike the casting of larger diameter rods, it was possible to continue casting, even if the solid-liquid interface existed outside the mould. If the mould exit temperature and the mould-cooler distance were maintained at 267°C and 2 mm respectively, the solid-liquid interface was located at the mould exit when the casting speed was 0.35 m/mln. However, when the casting speed exceeded about 1.2 m/min, the cast surface of the wire deteriorated and exhibited a matted appearance due to the formation of ridges. With a casting speed of 4.2 m/min, the solid-liquid interface location was estimated to be about 4 mm outside the mould. A calculated temperature distribution within the solidifying strand revealed that the solid-liquid interface entered the cooling water when the casting speed was 1.2 m/min. Thus, in order to obtain a cast wire with a high surface finish, the strand ...","PeriodicalId":9691,"journal":{"name":"Cast Metals","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"1994-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84133866","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 : 1994-01-01DOI: 10.1080/09534962.1994.11819150
S. F. Chen, T. Lui, L. Chen
{"title":"A Discussion on the Effect of Segregation on Intermediate Temperature Embrittlement of Ferritic Spheroidal-graphite Cast Iron","authors":"S. F. Chen, T. Lui, L. Chen","doi":"10.1080/09534962.1994.11819150","DOIUrl":"https://doi.org/10.1080/09534962.1994.11819150","url":null,"abstract":"","PeriodicalId":9691,"journal":{"name":"Cast Metals","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"1994-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86435942","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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