高压处理对7075铝合金微观力学性能的影响  

Effects of High Pressure Treatment on Micro-Mechanical Properties of 7075 Aluminum Alloy

作　　者：王海燕[1] 刘琳[2] 谌岩[1] 赵军[3] 刘建华[4] 张瑞军[4] 

机构地区：[1]燕山大学应用化学河北省重点实验室,河北秦皇岛066004 [2]唐山职业技术学院,河北唐山063000 [3]北华航天工业学院材料工程系,河北廊坊065000 [4]燕山大学亚稳材料制备技术与科学国家重点实验室,河北秦皇岛066004

出　　处：《高压物理学报》2013年第5期768-772,共5页Chinese Journal of High Pressure Physics

基　　金：河北省自然科学基金(E2013409002);河北省教育厅青年基金(2011252)

摘　　要：借助纳米力学测试系统测试了4GPa压力处理前、后7075铝合金的硬度、弹性模量和塑性变形量,并结合对其显微组织的观察,探讨了高压处理对7075铝合金微观力学性能的影响。结果表明:4GPa压力处理能增大7075铝合金的硬度和弹性模量,减小塑性变形量,有效地提高了合金抵抗变形的能力。The hardness, elastic modulus and plastic deformation of the 7075 aluminum alloy before and after 4 GPa pressure treatment are measured by nano-indenter,and combined with the observation for the microstructure. The effects of high pressure treatment on micro-mechanical properties of 7075 aluminum alloy are investigated. The results show that 4 GPa pressure treatment can increase the hardness and elastic modulus of the 7075 aluminum alloy, and decrease its plastic deformation. As a result, the non-deformability of the alloy is improved effectively.

关 键 词：7075铝合金 高压处理 力学性能 

分 类 号：O521.2[理学—高压高温物理]