Crystallography of fracture facets in a near-alpha titanium alloy

被引：123

作者：

Sinha, V ^{[1
]}

Mills, MJ ^{[1
]}

Williams, JC ^{[1
]}

机构：

[1] Ohio State Univ, Dept Mat Sci & Engn, Columbus, OH 43210 USA

来源：

METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE | 2006年 / 37A卷 / 06期

关键词：

D O I：

10.1007/s11661-006-0144-5

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

A faceted initiation site is observed in Ti-6242 alloy for both the cyclic and static-loading test conditions. In this experimental study, the crystallographic orientation of the facets has been determined using the electron backscattered diffraction (EBSD) technique in conjunction with the quantitative tilt fractography in a scanning electron microscope (SEM). Quantitative tilt fractography analysis has been used to determine the spatial orientation of fracture facets. The results indicate that the normal-fatigue (no-dwell) fracture facets are oriented at similar to 5 deg with respect to the basal plane; the dwell-fatigue fracture facets are oriented at similar to 10 to 15 deg with respect to the basal plane and the static-loading fracture facets are oriented at similar to 20 deg with respect to the basal plane. These crystallographic orientation determinations of the fracture facets at the crack-initiation site can be used to obtain an idea about the type of loading that produced them.

引用

页码：2015 / 2026

页数：12

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