王海,魏芬绒,崔文俊,樊亚军,邵晖,李雷

• 1:西安赛特思迈钛业有限公司

摘要(Abstract)：

实验用TC4ELI铸锭,经过开坯、锻造、轧制为18 mm的棒材,轧制变形量为91.6%;轧制后进行淬火,淬火温度为830℃,最后对淬火后材料进行温度为650℃、750℃,时间为1 h、2 h的热处理实验。结果表明:淬火后TC4ELI钛合金的抗拉强度最高,达到1064 MPa,此时材料的屈强比只有0.79。XRD结果表明,淬火后β相发生了马氏体转变,提高了材料的强度;在拉伸过程中,亚稳定的转变组织由于应变引起的转变,使材料均匀伸长率提高,增大了抗拉强度与屈服强度的比值。采用轧制(变形量为91.6%)+淬火(830℃)+650℃×1 h的形变热处理工艺后材料的抗拉强度和屈强比分别为1017 MPa和0.94,伸长率为17.5%,综合性能优异。

关键词(KeyWords)： TC4钛合金;超低间隙;形变热处理;屈强比

Abstract:

Keywords:

基金项目(Foundation): 陕西省重大科技创新专项资金计划项目(2011ZKC05-13)

作者(Author): 王海,魏芬绒,崔文俊,樊亚军,邵晖,李雷

DOI: 10.13289/j.issn.1009-6264.2015.01.011

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