β稳定元素对钛合金α相强化行为的影响  

Effect of β Stabilizing Elements on the Strengthening Behavior of Titanium α Phase

作　　者：吴欢[1,2] 赵永庆[1,2] 葛鹏[2] 周伟[2] 

机构地区：[1]西北工业大学,陕西西安710072 [2]西北有色金属研究院,陕西西安710016

出　　处：《稀有金属材料与工程》2012年第5期805-810,共6页Rare Metal Materials and Engineering

基　　金：军品配套项目(JPPT-115-014);国家重点基础研究“973”项目(2007CB613805)

摘　　要：采用显微硬度测试结合宏观试样拉伸性能测试法,研究β稳定元素Mo、V、Cr、Fe对钛合金α相强化行为的影响。结果表明:β稳定元素Mo、V、Cr、Fe对α相的强化作用明显大于α稳定元素Al。在Ti-xMe合金中添加6%(质量分数,下同)的Al,α相的硬度和抗拉强度得到显著提高。在有6%Al元素的条件下,合金元素对钛合金α相的强化能力与没有Al元素时相同,其强化作用由大到小的顺序为:Fe>Cr>Mo>V。在Ti-xCr、Ti-xV,Ti-xMo、Ti-xV,Ti-xFe、Ti-xV这3组不同成分的合金相中添加6%Al,其强度之差变小。The effect of β stabilizing elements on the strengthening behavior of titanium α phase were investigated by selecting α' titanium alloy,though microhardness and microspecimen tensile test.Results show that the β stabilizing elements such as Mo,V,Cr and Fe present significantly higher strengthening ability than α stabilizing element Al.The hardness and strength of Ti-xMe α phase increase dramatically by addition of 6wt%Al.The strengthening ability of β stabilizing elements above keep invariant when 6wt%Al are added.The sequence of the strenghening ability of Mo,V,Cr and Fe are Fe>Cr>Mo>V.Adding of 6wt% Al into 'Ti-xCr,Ti-xV','Ti-xMo,Ti-xV' and 'Ti-xFe,Ti-xV',the difference of strength between the two in each group decreases.

关 键 词：钛合金 β稳定元素 Α相 强化能力 

分 类 号：TG146.23[一般工业技术—材料科学与工程]