Acta Metallurgica最新文献_第7页

An analysis of cavity nucleation in superplasticity 超塑性中空洞形核的分析

Acta Metallurgica Pub Date : 1989-11-01 DOI: 10.1016/0001-6160(89)90337-4

A.H. Chokshit , A.K. Mukherjee

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引用次数: 70

Microstructural studies on the initiation and growth of small fatigue cracks at 298, 77 and 4.2 K in polycrystalline copper 多晶铜在298,77和4.2 K下疲劳裂纹萌生和扩展的显微组织研究

Acta Metallurgica Pub Date : 1989-11-01 DOI: 10.1016/0001-6160(89)90327-1

I.B. Kwon , M.E. Fine, J. Weertman

引用次数: 29

Zirconium-vacancy binding and its influence on S′-precipitation in an AlCuMg alloy AlCu镁合金中锆-空位结合及其对S′-析出的影响

Acta Metallurgica Pub Date : 1989-11-01 DOI: 10.1016/0001-6160(89)90335-0

S. Özbilen, H.M. Flower

引用次数: 42

Overview no. 85 The mechanical behavior of ceramic matrix composites 概述。陶瓷基复合材料的力学性能

Acta Metallurgica Pub Date : 1989-10-01 DOI: 10.1016/0001-6160(89)90291-5

A.G. Evans , D.B. Marshall

引用次数: 483

Segregation mechanisms of temper embrittlement 回火脆化的偏析机制

Acta Metallurgica Pub Date : 1989-10-01 DOI: 10.1016/0001-6160(89)90292-7

M. Militzer, J. Wieting

{"title":"Segregation mechanisms of temper embrittlement","authors":"M. Militzer, J. Wieting","doi":"10.1016/0001-6160(89)90292-7","DOIUrl":"10.1016/0001-6160(89)90292-7","url":null,"abstract":"<div><p>Grain boundary segregations of impurities like P, S, Sb, Sn and others are the origin of temper embrittlement in low alloy steels. Till now it has been assumed that segregation kinetics is determined by bulk diffusion. But some recent experimental results and a more sophisticated account for diffusion behaviour of substitutional solutes in ferromagnetic iron show such an interpretation to be invalid at least for the embrittlement by phosphorus segregations. In contrast one has to start from the formation of a miscibility gap below 600°C within the grain boundary due to weak repulsive interaction between phosphorus and carbon. The growth of the P-rich phase by grain boundary diffusion should be rate determining to develop embrittlement. For energetical reasons the P-rich phase is favourably formed at prior austenite boundaries and may reach their dimensions. The growth kinetics of this phase is described by one-dimensional diffusion at grain boundaries. This model is successfully applied to experimental results of Möller <em>et al</em>. [<em>Archs Eisenhütt</em>. <strong>55</strong>, 543 (1984)]. It allows an unique interpretation of many observed details connected with segregation induced embrittlement.</p></div>","PeriodicalId":6969,"journal":{"name":"Acta Metallurgica","volume":"37 10","pages":"Pages 2585-2593"},"PeriodicalIF":0.0,"publicationDate":"1989-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0001-6160(89)90292-7","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"120212681","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}

引用次数: 19

Texture development in Al 1.8wt% Cu depending on the precipitation state—I. Rolling textures Al 1.8wt% Cu中织构发展与析出状态的关系。起伏的纹理

Acta Metallurgica Pub Date : 1989-10-01 DOI: 10.1016/0001-6160(89)90308-8

O. Engler, J. Hirsch, K. Lücke

引用次数: 88

Calculation of the atomic structure of the ∑ = 13 (θ = 22.6°) [001] twist boundary in gold 金中∑= 13 (θ = 22.6°)[001]扭转边界的原子结构计算

Acta Metallurgica Pub Date : 1989-10-01 DOI: 10.1016/0001-6160(89)90316-7

S.M. Foiles

引用次数: 25

Kinetics of growth and coarsening of faceted hexagonal precipitates in an f.c.c. matrix—II. Analysis 氟化碳基体中面六边形析出物生长和粗化的动力学[j]。分析

Acta Metallurgica Pub Date : 1989-10-01 DOI: 10.1016/0001-6160(89)90306-4

R.D. Doherty , K.E. Rajab