Microstructural damage during high-speed milling of titanium alloys

被引：43

作者：

Thomas, Meurig ^{[1
]}

Turner, Sam ^{[2
]}

Jackson, Martin ^{[1
]}

机构：

[1] Univ Sheffield, Dept Mat Engn, Sheffield S1 3JD, S Yorkshire, England

[2] Adv Mfg Res Ctr Boeing, Rotherham S60 5TZ, S Yorkshire, England

来源：

SCRIPTA MATERIALIA | 2010年 / 62卷 / 05期

基金：

英国工程与自然科学研究理事会;

关键词：

Titanium alloys; Machining; Slip; Texture; IMI; 834; SURFACE; LIFE;

D O I：

10.1016/j.scriptamat.2009.11.009

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

The majority of aero-structural titanium alloys are high-speed milled. This paper identifies microstructural subsurface damage in the form of intense slip bands after high-speed milling of Ti-6Al-4V and Ti-834. Such microstructural features are undetected by current surface integrity techniques. The alignment and density of the intense slip bands were found to be dependent on the subsurface alpha grain orientation. Such microstructural subsurface damage could degrade in-service properties, due to a reduction in fatigue crack initiation resistance. (C) 2009 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.

引用

页码：250 / 253

页数：4

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