Full 3D spatially resolved mapping of residual strain in a 316L austenitic stainless steel weld specimen

被引：27

作者：

Martins, R. V. ^{[1
]}

Ohms, C. ^{[1
]}

Decroos, K. ^{[1
,2
]}

机构：

[1] European Commiss, Joint Res Ctr, Inst Energy, NL-1755 LE Petten, Netherlands

[2] Univ Ghent, Dep Mat Sci & Engn, B-9052 Zwijnaarde, Belgium

来源：

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 2010年 / 527卷 / 18-19期

关键词：

Synchrotron X-ray diffraction; Spiral slit technique; Austenitic stainless steel; Welding; Residual stresses; SINGLE BEAD WELD; NEUTRON-DIFFRACTION; STRESS MEASUREMENTS; PLATE;

D O I：

10.1016/j.msea.2010.03.110

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

A three-pass slot weld specimen in austenitic stainless steel 316L, manufactured for the purpose of benchmarking Finite Element weld residual stress simulation codes, is currently undergoing extensive characterization within a research network. A comprehensive data set from non-destructive full three-dimensional spatially resolved macro-strain mapping in this specimen is presented here. Focussed high-energy synchrotron radiation together with the spiral slit technique was used to obtain depth-resolved information about the variation of lattice parameters. A novel full-pattern analysis approach, based on the evaluation of distinct diffraction spots from individual grains, was developed. The results show high tensile transverse stresses within the bead deposited first. The maximum longitudinal stresses were found beneath the slot. Furthermore significant weld start- and stop-effects were observed. The validity of the results is discussed with respect to the possible impact of intergranular strains due to plastic deformation. (C) 2010 Elsevier B.V. All rights reserved.

引用

页码：4779 / 4787

页数：9

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