Effect of precipitation on post-heat-treated Inconel 625 alloy after friction stir welding

被引：103

作者：

Song, K. H. ^{[1
]}

Nakata, K. ^{[1
]}

机构：

[1] Osaka Univ, Joining & Welding Res Inst, Osaka 5670047, Japan

来源：

MATERIALS & DESIGN | 2010年 / 31卷 / 06期

关键词：

Welding; Non-ferrous metal and alloys; Microstructure; Mechanical; MECHANICAL-PROPERTIES; MICROSTRUCTURE; SUPERALLOY; LASER;

D O I：

10.1016/j.matdes.2009.12.020

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

This study evaluated the mechanical properties of friction stir welded and post-heat-treated Inconel 625 alloy. Friction stir welding (FSW) was performed at rotation and traveling speeds of 200 rpm and 100 mm/min, respectively; heat treatment was carried out after welding at 700 degrees C for 100 h in vacuum. As a result, the application of FSW on Inconel 625 alloy led to the grain refinement in the stir zone, which resulted in increase in mechanical properties than those of the base material. Especially, applying heat treatment after FSW led to the improvement of mechanical properties of the welds; microhardness and tensile strength increased by more than 30% and 50%, respectively, as compared to FSW alone. (C) 2009 Elsevier Ltd. All rights reserved.

引用

页码：2942 / 2947

页数：6

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