Effect of Alpha Phase Characteristics on the High Cycle Fatigue Properties of Ti-6Al-4V Alloy
-
Published:2016-03
Issue:
Volume:849
Page:259-265
-
ISSN:1662-9752
-
Container-title:Materials Science Forum
-
language:
-
Short-container-title:MSF
Author:
Yan Xu1,
Kou Hong Chao1,
Han Feng Bo1,
Tang Bin1,
Zhang Li Jun2,
Li Jin Shan1
Affiliation:
1. Northwestern Polytechnical University
2. Xi’an Supercrystals Sci-Tec Development Co
Abstract
In this paper, high cycle fatigue (HCF) properties of Ti-6Al-4V alloys prepared by different forging processes have been investigated. Optical microscopy (OM) and Transmission electron microscopy (TEM) were used to characterize microstructure, and the fatigue fracture micromechanisms were analyzed. Fracture surfaces of specimens were observed by scanning electron microscopy (SEM) to identify the macroscopic fracture mode. It was found that die forging at high temperature would increase the proportion of low angle grain boundary in equiaxed primary α phase and lead to lamella secondary α coarsen with the appearance of dislocation networks, which would make the HCF properties decline. Besides, it showed that the HCF properties increase with increasing the volume fraction of primary α.
Publisher
Trans Tech Publications, Ltd.
Subject
Mechanical Engineering,Mechanics of Materials,Condensed Matter Physics,General Materials Science
Cited by
2 articles.
订阅此论文施引文献
订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献