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转速对高压扭转Cu试样的组织与性能的影响
Alternative TitleEffect of revolution speed on microstructure and microhardness of Cu spencimens subjected to high-pressure torsion
谢子令; 武晓雷; 谢季佳; 洪友士
Source Publication材料热处理学报
2010-11-25
Volume31Issue:11Pages:109-115
ISSN1009-6264
Abstract通过高压扭转(HPT)技术在不同转速条件下实现了Cu试样的晶粒细化.利用光学显微镜(OM),透射电镜(TEM)及显微硬度计观察并测试了组织的结构与性能,并基于有限元计算了变形诱导试样的温升,研究了转速对Cu试样的组织细化与性能的影响.结果表明:转速由1/3r.min-1增大至1r.min-1,经1圈扭转变形,试样温度由40.8℃升高到54.1℃,变形组织均为100~600nm的高位错密度位错胞/亚晶组织,显微硬度由初始态的52HV0.05增大至140HV0.05;经16圈扭转变形,试样温度由50.4℃升高到97.4℃,组织细化到200nm.慢速扭转变形试样晶内位错密度高,微观组织处于严重变形状态;而快速扭转试样晶内衬度均匀,位错较少,微观组织经历明显的动态回复,显微硬度较慢速扭转变形试样低6%
KeywordCu 高压扭转 微观结构 显微硬度 扭转速度
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Indexed ByEI ; CSCD
Language中文
Funding Organization国家自然科学基金项目(10721202,10772178,50571110)
CSCD IDCSCD:4066695
Citation statistics
Cited Times:3[CSCD]   [CSCD Record]
Document Type期刊论文
Identifierhttp://dspace.imech.ac.cn/handle/311007/44004
Collection非线性力学国家重点实验室
Corresponding Author谢子令
Recommended Citation
GB/T 7714
谢子令,武晓雷,谢季佳,等. 转速对高压扭转Cu试样的组织与性能的影响[J]. 材料热处理学报,2010,31(11):109-115.
APA 谢子令,武晓雷,谢季佳,&洪友士.(2010).转速对高压扭转Cu试样的组织与性能的影响.材料热处理学报,31(11),109-115.
MLA 谢子令,et al."转速对高压扭转Cu试样的组织与性能的影响".材料热处理学报 31.11(2010):109-115.
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