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背景:Ti-6Al-4V合金由于α相中的准解理(QC)和微空穴聚集(MVC)以及在含氢量等于或大干100ppm(重量)的试样中的所谓界面开裂(IFC)的晶间开裂而出现了持久载荷开裂。本文的目的是为了更全面地叙述此种开裂的起源,即开裂的微观机理。程序:本文讨论的材料是Ti-6Al-4V-0.18％OX;这种材料在以前的评论中曾介绍过[3]。界面开裂(或IFC)的例子取自含215ppm氢试样的持久载荷试验。
BACKGROUND: The Ti-6Al-4V alloy has a very high surface area due to the so-called interfacial cracking (IFC) in the αphase quasi cleavage (QC) and microcavity accumulation (MVC) and in the sample with hydrogen content equal to or greater than 100 ppm ) Of the intergranular cracking and sustained load cracking. The purpose of this article is to provide a more complete account of the origin of such cracking, the micro-mechanism of cracking. Procedure: The material discussed in this paper is Ti-6Al-4V-0.18% OX; this material was introduced in previous reviews [3]. Examples of interfacial cracking (or IFC) are taken from a sustained load test with 215 ppm hydrogen sample.