NDLI: A multi-scale study of Inconel 625 powders HIP process and construction of HIP maps

Content Provider	Springer Nature Link
Author	Wang, Min Yin, Yajun Zhou, Jianxin Ji, Xiaoyuan Nan, Hai Xue, Pengju Shi, Yusheng
Copyright Year	2016
Abstract	A multi-scale analysis of Inconel 625 powders hot isostatic pressing (HIP) has been carried out numerically by finite element method base on the modified Shima model. Numerical results have indicated the capsule deformation and powders movement at different HIP parameters. Furthermore, five interrupted experiments have given a vivid description about the powder densification process in the micro level. Results have shown that at the initial stage of HIP, densification process is caused by the movement, arrangement, and aggregation of powders. When the coordinate number reaches to the maximum, plastic deformation plays the leading role in densification. When the applied pressure is bigger than the yield stress of powders, parts of the particles will be squeezed into the voids and all the powders particles are linked into a whole unit. At the last stage, plastic flows are relatively small; diffusion and power law creep mechanisms play the leading role in densification. Powder atoms are squeezed into the residual porosity slowly with the help of isostatic temperature and pressure. Based on the above micro analysis, coupled with the original empirical densification model, the HIP maps of Inconel 625 powders have been constructed. And the HIP maps have depicted how the relative density changes with HIP temperature, pressure, and duration time. Effects of particle size on the densification have also been considered in the HIP maps.
Starting Page	3055
Ending Page	3066
Page Count	12
File Format	PDF
ISSN	02683768
Journal	The International Journal of Advanced Manufacturing Technology
Volume Number	90
Issue Number	9-12
e-ISSN	14333015
Language	English
Publisher	Springer London
Publisher Date	2016-10-27
Publisher Place	London
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Multi-scale Hot isostatic pressing Numerical simulation HIP maps Industrial and Production Engineering Media Management Mechanical Engineering Computer-Aided Engineering (CAD, CAE) and Design
Content Type	Text
Resource Type	Article
Subject	Industrial and Manufacturing Engineering Control and Systems Engineering Mechanical Engineering Computer Science Applications Software

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