Multiscale modeling of the mechanical behavior of IN718 superalloy based on micropillar compression and computational homogenization

被引：86

作者：

Cruzado, A. ^{[1
]}

Gan, B. ^{[1
]}

Jimenez, M. ^{[1
]}

Barba, D. ^{[1
]}

Ostolaza, K. ^{[2
]}

Linaza, A. ^{[2
]}

Molina-Aldareguia, J. M. ^{[1
]}

Llorca, J. ^{[1
,3
]}

Segurado, J. ^{[1
,3
]}

机构：

[1] IAIDEA Mat Inst, Madrid 28906, Spain

[2] Ind Turbo Propulsores, Zamudio 48170, Bizkaia, Spain

[3] Univ Politecn Madrid, Dept Mat Sci, ETS Ingenieros Caminos, Madrid 28040, Spain

来源：

ACTA MATERIALIA | 2015年 / 98卷

基金：

欧盟第七框架计划;

关键词：

Multiscale modeling; Ni-based superalloys; Crystal plasticity; Micropillar; Computational homogenization; PLASTIC-DEFORMATION; TEXTURE DEVELOPMENT; SINGLE-CRYSTALS; SIMULATION; ORIENTATION; ALLOYS;

D O I：

10.1016/j.actamat.2015.07.006

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

A multiscale modeling strategy is presented to determine the effective mechanical properties of polycrystalline Ni-based superalloys. They are obtained by computational homogenization of a representative volume element of the microstructure which was built from the grain size, shape and orientation distributions of the material. The mechanical behavior of each grain was simulated by means of a crystal plasticity model, and the model parameters that dictate the evolution of the critical resolved shear stress in each slip system (including viscoplastic effects as well as self and latent hardening) were obtained from compression tests in micropillars milled from grains of the polycrystal in different orientations suited for single, double (coplanar and non coplanar) and multiple slip. The multiscale model predictions of the compressive strength of wrought IN718 were in good agreement with the experimental results. (C) 2015 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.

引用

页码：242 / 253

页数：12

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