中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
Annealing and strain rate effects on the mechanical behavior of ultrafine-grained iron produced by SPD

文献类型:期刊论文

作者Yuan FP(袁福平); Wu XL(武晓雷)
刊名THEORETICAL & APPLIED MECHANICS LETTERS
出版日期2011
卷号1期号:2页码:021002
关键词UFG/NC Fe ECAP EBSD thermal stability strain rate sensitivity
ISSN号2095-0349
中文摘要Thermal stability and strain rate sensitivity of ultra ne-grained (UFG) Fe produced by severe plastic deformation (SPD) were investigated. The UFG Fe was processed by equal-channel angular pressing (ECAP) via route Bc. After 6 passes, the grain size of UFG Fe reaches 600 nm, as con rmed by means of electron back scatter di raction (EBSD). Examination of micro-hardness and grain size of UFG Fe as a function of post-ECAP annealing temperature shows a transition from recovery to recrystallization. The critical transition temperature is approximately 500 C, and the material has a bimodal structure after annealing at this temperature. Deformation behaviors of ECAP Fe and ECAP + annealing Fe were studied under both quasi-static and dynamic compressive loadings. The UFG iron shows increased strength and reduced strain rate sensitivity compared with its coarse-grained counterparts. The appropriate post-ECAP annealing can increase strain hardening ability and cancel out thermal softening e ect with only a small loss of strength under dynamic loading.
原文出处http://taml.cstam.org.cn/EN/Y2011/V1/I2/3#
语种英语
公开日期2014-04-21
源URL[http://dspace.imech.ac.cn/handle/311007/48733]  
专题力学研究所_非线性力学国家重点实验室
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Yuan FP,Wu XL. Annealing and strain rate effects on the mechanical behavior of ultrafine-grained iron produced by SPD[J]. THEORETICAL & APPLIED MECHANICS LETTERS,2011,1(2):021002.
APA 袁福平,&武晓雷.(2011).Annealing and strain rate effects on the mechanical behavior of ultrafine-grained iron produced by SPD.THEORETICAL & APPLIED MECHANICS LETTERS,1(2),021002.
MLA 袁福平,et al."Annealing and strain rate effects on the mechanical behavior of ultrafine-grained iron produced by SPD".THEORETICAL & APPLIED MECHANICS LETTERS 1.2(2011):021002.

入库方式: OAI收割

来源:力学研究所

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