期刊论文

Pan, Q.-L.(pql@mail.csu.edu.cn)

中文

材料科学与工艺

1005-0299

2010

18

3

352-355+362

2006AA03Z523:国家高技术研究发展计划（863计划）

本校为其他机构

为了提高含Sc超高强Al－Zn－Cu－Mg－Zr合金的固溶程度，减少未溶结晶相的数量，用极差分析方法对强化固溶处理制度进行了优化.采用拉伸试验、金相和透射电镜分析、扫描电镜观察和能谱分析等方法研究了强化固溶对合金力学性能和组织的影响.结果表明，与常规固溶相比，强化固溶后合金的屈服强度和抗拉强度分别提高了28 MPa和18 MPa，合金的断口形貌呈现晶内韧窝与沿晶破裂的混合断裂，强化固溶后合金的力学性能有所改善，残余的第二相数量明显减少，η′析出相也更细小、弥散.

The optimization of promotively-solutionizing was analyzed with range analysis method to promote the solution degree and reduce the residual constituents of the ultra-high strength Al-Zn-Cu-Mg-Zr alloy containing Sc. The effects of promotively-solutionizing on mechanical properties and microstructure of the alloy were investigated by tensile tests, optical microscope (OM) and transmission electron microscope (TEM), scanning electron microscope (SEM) and energy dispersive spectrometer (EDS). The results show that the yield strength and ultimate ...