Study on microstructure and mechanical behavior of dissimilar Ti17 friction welds

被引：25

作者：

Ji, Yingping ^{[1
]}

Wu, Sujun ^{[1
]}

机构：

[1] Beihang Univ, Sch Mat Sci & Engn, Beijing 100191, Peoples R China

来源：

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 2014年 / 596卷

关键词：

Friction welding; Titanium alloys; Post weld heat treatment; Microstructure; Microhardness; Fracture toughness; FRACTURE-TOUGHNESS; FATIGUE PROPERTIES; TI-6AL-4V ALLOY; STAINLESS-STEEL; HEAT-TREATMENT; TITANIUM; ALUMINUM; TEXTURE; TENSILE; JOINTS;

D O I：

10.1016/j.msea.2013.10.005

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Dissimilar welds of Ti17 alloy with lamellar and bimodal structures were produced by friction welding. Microstructural characterizations were performed by means of optical, scanning and transmission electron microscope as well as X-ray diffraction analysis. Mechanical evaluations were conducted by determining microhardness and fracture toughness both in as welded and post weld heat treated (PWHTed) conditions. The results show that in as welded condition, the minimum microhardness and fracture toughness were observed in the weld center. However, in PWHTed condition, the microhardness of weld center was enhanced to a maximum while the toughness was decreased. This is thought to be resulted from fine alpha and beta precipitations upon post weld heat treatment. (C) 2013 Elsevier B.V. All rights reserved.

引用

页码：32 / 40

页数：9

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