An investigation of densification behavior of nickel alloy powder during hot isostatic pressing

被引：30

作者：

ElRakayby, Hosam ^{[1
]}

Kim, HongKyu ^{[2
]}

Hong, SungSuk ^{[2
]}

Kim, KiTae ^{[1
]}

机构：

[1] Pohang Univ Sci & Technol POSTECH, Dept Mech Engn, Pohang 790784, Gyeongbuk, South Korea

[2] Agcy Def Dev, Daejon 305600, South Korea

来源：

ADVANCED POWDER TECHNOLOGY | 2015年 / 26卷 / 05期

关键词：

Densification; Nickel powder; Hot isostatic pressing; Finite element analysis; Constitutive equation; MECHANICAL-PROPERTIES; MICROSTRUCTURE; SIMULATION; CREEP;

D O I：

10.1016/j.apt.2015.07.005

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

Hot isostatic pressing process is used to consolidate powders to manufacture a near net shape parts of complex shapes for many applications including aeronautics. The optimal container design is very expensive to get by trial and error manufacturing method of prototypes. Numerical simulations are the solution to save these costs. The densification behavior of nickel-chromium-cobalt alloy powder was studied by implementing the densification model of Abouaf et al. in the user defined subroutine CREEP of ABAQUS. The rheological functions of Abouaf et al. model were employed for nickel-chromium-cobalt alloy powder to describe the powder behavior under high temperature and pressure. Experimental data were obtained for nickel-chromium-cobalt alloy powder after applying high pressure and temperature during hot isostatic pressing process. Experimental data were compared with finite element calculations. Good agreements were shown between finite element calculations and experimental data for the sample shape change after hot isostatic pressing. (C) 2015 The Society of Powder Technology Japan. Published by Elsevier B.V. and The Society of Powder Technology Japan. All rights reserved.

引用

页码：1314 / 1318

页数：5

共 26 条

[1] FINITE-ELEMENT SIMULATION OF HOT ISOSTATIC PRESSING OF METAL POWDERS [J].