IMECH-IR  > 力学所知识产出(1956-2008)
微纳米晶金属的应变率敏感性及应变硬化行为分析
Alternative TitleANALYSIS OF STRAIN RATE SENSITIVITY AND STRAIN HARDEING BEHAVIOR IN ULTRAFINE-GRAINED AND NANOCRYSTALLINE METALS
谢子令; 武晓雷; 洪友士
Source Publication固体力学学报
2007-03-30
Volume28Issue:1Pages:43-48
ISSN0254-7805
Abstract基于亚微米、纳米晶粒组织塑性变形过程中多种变形机制(位错机制、扩散机制及晶界滑动机制)共存,建立了理论模型,用于定量研究亚微米、纳米晶粒组织的塑性变形行为.以铜为模型材料,计算分析了晶粒尺度、应变率以及温度对亚微米、纳米晶粒组织塑性变形行为的影响.结果表明:相比粗晶铜,亚微米晶铜表现出明显的应变率敏感性,并且应变率敏感系数随晶粒尺度及变形速率的减小而增大;同时,增大变形速率或降低变形温度都能提高材料的应变硬化能力,延缓颈缩发生,进而提高材料的延性.计算分析结果与实验报道吻合.
Keyword纳米晶 塑性变形 应变率敏感性 应变硬化
Indexed ByCSCD
Language中文
CSCD IDCSCD:2808898
Citation statistics
Cited Times:5[CSCD]   [CSCD Record]
Document Type期刊论文
Identifierhttp://dspace.imech.ac.cn/handle/311007/41194
Collection力学所知识产出(1956-2008)
Corresponding Author谢子令
Recommended Citation
GB/T 7714
谢子令,武晓雷,洪友士. 微纳米晶金属的应变率敏感性及应变硬化行为分析[J]. 固体力学学报,2007,28,1,:43-48.
APA 谢子令,武晓雷,&洪友士.(2007).微纳米晶金属的应变率敏感性及应变硬化行为分析.固体力学学报,28(1),43-48.
MLA 谢子令,et al."微纳米晶金属的应变率敏感性及应变硬化行为分析".固体力学学报 28.1(2007):43-48.
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