Effects of Impurity on Microstructure and Hardness in Pure Al Subjected to Dynamic Plastic Deformation at Cryogenic Temp

• 来源期刊: 材料科学技术学报：英文版
• 学科: 工学
• 关键词: 塑性变形 显微硬度 显微组织 纯铝 杂质 低温 位错密度 颗粒大小
• 年，卷（期）: 2011,（7）
• 页码范围: 628-632
• 页数: 5页
• 分类号: TG301|TQ153.2
• 语种: 英文

摘要

Microstructure and hardness were investigated in pure Al samples with different purities （5N： 99.999%, 4N： 99.993%, and 2N： 99.7% in weight） subjected to dynamic plastic deformation at cryogenic temperatures. The saturated sizes of refined grains/subgrain