Effect of Hot Isostatic Pressing Conditions and Cooling Rate on Microstructure and Properties of Ti-6Al-4V Alloy from Atomized Powder

The effects of temperature and pressure on density, microstructure and mechanical properties of powder compacts during hot isostatic pressing（HIPping） were investigated. Optimized HIPping parameters of temperature range from 900 to 940℃, pressure over 100 MPa and holding time of 3 h, were obtained....

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Bibliographic Details
Published inJournal of materials science & technology Vol. 30; no. 12; pp. 1289 - 1295
Main Authors Xu, Lei, Guo, Ruipeng, Bai, Chunguang, Lei, Jiafeng, Yang, Rui
Format Journal Article
LanguageEnglish
Published Elsevier Ltd 01.12.2014
Subjects
Computer simulation
Cooling
Cooling rate
Density
Heat treatment
Hot isostatic pressing
Materials science
Mechanical properties
Microstructure
Ti-6Al-4V合金
Titanium base alloys
Ti–6Al–4V
仿真预测
冷却速度
机械性能
温度范围
热等静压
组织
雾化粉末
Mechanical properties
Ti–6Al–4V
Microstructure
Cooling rate
Hot isostatic pressing
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ISSN1005-0302
1941-1162
DOI10.1016/j.jmst.2014.04.011

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Summary:The effects of temperature and pressure on density, microstructure and mechanical properties of powder compacts during hot isostatic pressing（HIPping） were investigated. Optimized HIPping parameters of temperature range from 900 to 940℃, pressure over 100 MPa and holding time of 3 h, were obtained. Tensile properties after different heat treatments show that both the geometry of samples and cooling rate have a significant influence on mechanical properties. Finite element method was used to predict the temperature field distribution during HIPped sample cooling, and the experimental results are in agreement with simulation prediction. The interaction of HIPping parameters was analyzed based on the response surface methodology（RSM） in this study.
Bibliography:Lei Xu;Ruipeng Guo;Chunguang Bai;Jiafeng Lei;Rui Yang;Institute of Metal Research, Chinese Academy of Sciences;School of Materials and Metallurgy, Northeastern University
Hot isostatic pressing;Ti-6Al-4V;Cooling rate;Microstructure;Mechanical properties
21-1315/TG
The effects of temperature and pressure on density, microstructure and mechanical properties of powder compacts during hot isostatic pressing（HIPping） were investigated. Optimized HIPping parameters of temperature range from 900 to 940℃, pressure over 100 MPa and holding time of 3 h, were obtained. Tensile properties after different heat treatments show that both the geometry of samples and cooling rate have a significant influence on mechanical properties. Finite element method was used to predict the temperature field distribution during HIPped sample cooling, and the experimental results are in agreement with simulation prediction. The interaction of HIPping parameters was analyzed based on the response surface methodology（RSM） in this study.
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ISSN:1005-0302
1941-1162
DOI:10.1016/j.jmst.2014.04.011