期刊文献+

热暴露对7A12-T7352锻件组织和性能的影响 被引量:2

Effect of thermal exposure on microstructure and mechanical properties of 7A12-T7352 forging
下载PDF
导出
摘要 采用室温拉伸力学性能测试和透射电镜观察等研究热暴露对7A12-T7352自由锻件微观组织和力学性能的影响。结果表明,热暴露温度显著影响合金的力学性能;当热暴露温度不高于125℃时,合金的强度略有且升高,且可以在较长时间内保持稳定;当热暴露温度高于150℃时,合金的强度随着热暴露时间的延长持续下降,热暴露温度越高,强度下降幅度越大。在高于150℃热暴露过程中,η′相和η相的快速粗化是导致7A12自由锻件强度下降的内在原因。 The microstructure and mechanical properties of 7A12-T7352 forging under different thermal exposure conditions were studied by TEM analysis and tensile test. The results show that thermal exposure temperature affects the mechanical properties of the forging significantly. When the alloy is exposed at 125℃or lower, the strength will increase and then keep stable for a long time. When the thermal exposure temperature is higher than 150℃, the strength decreases obviously with increasing the thermal exposure time. Higher exposure temperature leads to greater decrease of the strength. The strength decreases due to the coarsening ofη′andηphases when the alloy exposed at temperature higher than 150℃.
出处 《中国有色金属学报》 EI CAS CSCD 北大核心 2014年第8期1992-1997,共6页 The Chinese Journal of Nonferrous Metals
关键词 7A12铝合金 热暴露 微观组织 力学性能 7A12 Al alloy thermal exposure microstructure mechanical property
  • 相关文献

参考文献15

二级参考文献123

共引文献79

同被引文献20

引证文献2

二级引证文献6

相关作者

内容加载中请稍等...

相关机构

内容加载中请稍等...

相关主题

内容加载中请稍等...

浏览历史

内容加载中请稍等...
;
使用帮助 返回顶部