锻造及热处理对Mg-8.5Gd-3.2Y-0.4Zr合金显微组织及力学性能的影响
发布时间:2018-05-03 08:36
本文选题:锻造 + 热处理 ; 参考:《热加工工艺》2016年21期
【摘要】:通过光学显微镜和透射电镜观察及力学性能测试研究了锻造及热处理对Mg-8.5Gd-3.2Y-0.4Zr(wt%)合金显微组织及力学性能的影响。结果表明,520℃×15 h均匀化可使分布在晶界的共晶组织完全溶入基体;锻造可以显著细化合金的晶粒、提高其力学性能;合金锻后200℃×50 h时效可以进一步提高合金的强度,但伸长率有所下降。
[Abstract]:The effects of forging and heat treatment on the microstructure and mechanical properties of Mg-8.5Gd-3.2Y-0.4Zrwt) alloy were studied by optical microscope and transmission electron microscope. The results show that the eutectic microstructure distributed at grain boundaries can be completely dissolved into the matrix by homogenization at 520 鈩,
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