Thermo-metallurgical and thermo-mechanical computations for laser welded joint in 9Cr–1Mo(V, Nb) ferritic/martensitic steel

•Very short residence time (normal stress>transverse stress.•Striking similarity between the profiles of longitudinal and normal components of residual stress.•Significant work hardening of austenite prior to martensitic transformation while cooling. Transient thermo-metallurgical and thermo-mech...

Full description

Saved in:
Bibliographic Details
Published in:Materials in engineering 2014-07, Vol.59, p.211-220
Main Authors: Kumar, Santosh, Awasthi, Reena, Viswanadham, C.S., Bhanumurthy, K., Dey, G.K.
Format: Article
Language:English
Subjects:
Chromium molybdenum steels
Computation
Ferritic stainless steels
Heat affected zone
Laser beam welding
Mathematical models
Residual stress
Steels
Strain hardening
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:•Very short residence time (normal stress>transverse stress.•Striking similarity between the profiles of longitudinal and normal components of residual stress.•Significant work hardening of austenite prior to martensitic transformation while cooling. Transient thermo-metallurgical and thermo-mechanical computations for laser welded joint, in 9mm thick 9Cr–1Mo(V, Nb) ferritic/martensitic steel plate, in square-butt configuration, have been carried out by simulating the laser welding process on the 3-dimensional (3D) solid model using a finite element based welding and heat treatment simulation solution package – SYSWELD. The heat source has been modeled as a combination of a 3D Gaussian and a double ellipsoid profiles for realistic representation of fusion zone morphology. Phase and temperature-dependent physical and mechanical properties of this material were used in these computations. The results show very short residence time (
ISSN:0261-3069
DOI:10.1016/j.matdes.2014.02.046