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Title: Modeling the effect of porosity on ductile fracture of powder processed titanium alloy

Abstract

Ductile fracture of two-phase alloys occurs by initiation, growth and coalescence of voids which nucleate at second-phase particles. In this work, a model of void growth based on Wilkinson and Vitek crack theory was used to describe the crack propagation in powder metallurgically processed titanium alloy. In this model, the effect of the stress field of the residual pores on the growth and coalescence of the secondary voids was considered. The purpose is to provide useful insight to the influence of the residual pores after powder metallurgical processing and the subsequently stress-induced secondary voids on fracture of titanium alloys.

Authors:
 [1];  [2]
  1. Jilin Univ. of Technology, Changchun (China). Dept. of Metals and Materials
  2. Univ. of Birmingham, Edgbaston (United Kingdom). School of Metallurgy and Materials
Publication Date:
OSTI Identifier:
691332
Resource Type:
Journal Article
Journal Name:
Scripta Materialia
Additional Journal Information:
Journal Volume: 41; Journal Issue: 5; Other Information: PBD: 6 Aug 1999
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; PORE STRUCTURE; FRACTURE PROPERTIES; TITANIUM BASE ALLOYS; POWDER METALLURGY; CRACK PROPAGATION; STRESSES; MATHEMATICAL MODELS

Citation Formats

Niu, H.J., and Chang, I.T.H. Modeling the effect of porosity on ductile fracture of powder processed titanium alloy. United States: N. p., 1999. Web. doi:10.1016/S1359-6462(99)00178-5.
Niu, H.J., & Chang, I.T.H. Modeling the effect of porosity on ductile fracture of powder processed titanium alloy. United States. doi:10.1016/S1359-6462(99)00178-5.
Niu, H.J., and Chang, I.T.H. Fri . "Modeling the effect of porosity on ductile fracture of powder processed titanium alloy". United States. doi:10.1016/S1359-6462(99)00178-5.
@article{osti_691332,
title = {Modeling the effect of porosity on ductile fracture of powder processed titanium alloy},
author = {Niu, H.J. and Chang, I.T.H.},
abstractNote = {Ductile fracture of two-phase alloys occurs by initiation, growth and coalescence of voids which nucleate at second-phase particles. In this work, a model of void growth based on Wilkinson and Vitek crack theory was used to describe the crack propagation in powder metallurgically processed titanium alloy. In this model, the effect of the stress field of the residual pores on the growth and coalescence of the secondary voids was considered. The purpose is to provide useful insight to the influence of the residual pores after powder metallurgical processing and the subsequently stress-induced secondary voids on fracture of titanium alloys.},
doi = {10.1016/S1359-6462(99)00178-5},
journal = {Scripta Materialia},
number = 5,
volume = 41,
place = {United States},
year = {1999},
month = {8}
}