Predictions of the Mechanical Response of Sintered FGH96 Powder Compacts

被引：4

作者：

Chavoshi, Saeed Z. ^{[1
]}

Tagarielli, Vito L. ^{[2
]}

Shi, Zhusheng ^{[1
]}

Lin, Jianguo ^{[1
]}

Wang, Shuyun ^{[3
]}

Jiang, Jiaying ^{[3
]}

Dear, John P. ^{[1
]}

Nikbin, Kamran ^{[1
]}

机构：

[1] Imperial Coll London, Dept Mech Engn, London SW7 2AZ, England

[2] Imperial Coll London, Dept Aeronaut, London SW7 2AZ, England

[3] Beijing Inst Aeronaut Mat, Beijing 100095, Peoples R China

来源：

JOURNAL OF ENGINEERING MATERIALS AND TECHNOLOGY-TRANSACTIONS OF THE ASME | 2020年 / 142卷 / 02期

关键词：

finite element modeling; nickel-based superalloy; mechanical response; porosity; EFFECTIVE ELASTIC-MODULI; FINITE-ELEMENT-ANALYSIS; POROUS MATERIALS; YOUNGS MODULUS; POISSONS RATIO; DEFORMATION-BEHAVIOR; POROSITY; ALUMINA; SOLIDS; MODELS;

D O I：

10.1115/1.4045185

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

This paper presents predictions of the mechanical response of sintered FGH96 Ni-based superalloy powder compacts at high temperatures, obtained by the analysis of 3D representative volume elements generated by both X-ray tomography and a virtual technique. The response of the material to a multi-axial state of stress/strain for porosities as large as 0.3 is explored, obtaining the yield surfaces and their evolution as well as scaling laws for both elastic and plastic properties. The two modeling approaches are found in good agreement. The sensitivity of the predictions to particle size, inter-particle friction, applied strain rate, and boundary conditions is also examined.

引用

页数：11

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