Residual stresses analysis during quenching of 36NiCrMo16 steel

被引：0

作者：

Belhadj, A. ^{[1
]}

Bouhafs, M. ^{[1
]}

Bessrour, J. ^{[1
]}

Barrallier, L. ^{[1
]}

机构：

[1] UR Mecan Appl Ingn & Ind, ENIT, BP 37, Tunis 1002, Tunisia

来源：

MATERIAUX & TECHNIQUES | 2008年 / 96卷 / 4-5期

关键词：

Residual stress; martensitic quenching; coupling thermomechanic; numeric simulation; non-linear; transient; hole-drilling method; X-ray diffraction;

D O I：

10.1051/mattech:2008046

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

This study concerns residual stress generated by bulk heat treatment of 36NiCrMo16 steel french grade. The aim of this study is to develop a model for prediction of the residual stresses state generated by quenching. The resolution of this problem requires the development of two numeric simulation models, using a standard FEM code. The first is a non-linear transient model allowing simulating of space-time distribution of temperature from the austenitic temperature to the cooling temperature. The latter is a non-linear transientmodel allowing themechanical behaviour simulation of the specimen introducing his thermal history during cooling as loading. We propose the definition of a global expansion coefficient to take into account the simultaneous and cumulated thermal and martensitic transformation strains. Mechanical features and thermophysics properties are described in space-time evolutions depending on the temperature and the present phases. Simulated residual stresses evolution are compared with stresses measured by hole-drilling method and by X-ray diffraction.

引用

页数：21

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