超细晶粒钛 2 级的摩擦焊接性

IF 3.8 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY
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引用次数: 0

摘要

本文介绍了通过静水挤压和旋转锻造(HE+RS)获得的具有超细晶粒(UFG)微观结构的 2 级钛的摩擦焊接性实验研究结果。采用不同转速(n)值的高速摩擦焊作为连接方法。n=7000 rpm 时获得了最佳性能。金相学观察证实,在热机械影响区(TMAZ)和摩擦焊缝(FW)中形成了母材微观结构发生变化的连续摩擦接头。机械性能结果表明,TMAZ 的硬度下降幅度最大。在 HE+RS 工艺(UTS=1050 兆帕)之后,摩擦焊接接头的抗拉强度值比初始状态的 UFG 钛 2 级低 18%。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Friction weldability of ultrafine-grained titanium grade 2

The paper presents the results of an experimental study of the friction weldability of Titanium Grade 2 with ultrafine-grained (UFG) microstructure obtained by hydrostatic extrusion and rotary swaging (HE+RS). High-speed friction welding with different rotational speed (n) values was used as a joining method. The best properties were obtained for n=7000 rpm. Metallographic observations confirmed the formation of a continuous friction joint with a changed microstructure of the base material in the thermal-mechanical affected zone (TMAZ) and a friction weld (FW). The results of the mechanical properties showed the greatest decrease in hardness in the TMAZ. The friction welded joint had an 18 % lower tensile strength value than initial state UFG Titanium Grade 2 after the HE+RS process (with UTS=1050 MPa).

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来源期刊
CiteScore
7.10
自引率
9.80%
发文量
58
审稿时长
44 days
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