Paper Title:
Effect of Postweld Heat Treatment on Toughness of the Heat Affected Zone in ASTM4130 Steel with Single-Pass Welding
  Abstract

The effect of postweld heat treatment (PWHT) on microstructure and properties of the heat affected zone (HAZ) in ASTM4130 steel fabricated by single-pass welding was investigated by weld thermal simulation test, optical microscope, transmission electron microscopy and scanning electron microscope. The results show that the subcritical HAZ (SCHAZ) toughness slightly decreases due to the aggregation and growth of carbides. Other HAZ toughness is significantly improved showing that the 650°C/1.5h PWHT is effective. The toughness improvement of the fine-grained HAZ (FGHAZ) and the intercritical HAZ (ICHAZ) is chiefly resulted from the complete decomposition of martensite and M-A constituent. Meanwhile, the supersaturation reduction of non-equilibrium microstructure and the relief of residual stress effectively improve CGHAZ toughness.

  Info
Periodical
Advanced Materials Research (Volumes 228-229)
Edited by
Quanjie Gao
Pages
975-980
DOI
10.4028/www.scientific.net/AMR.228-229.975
Citation
L. Y. Li, Y. Wang, T. Han, C. W. Li, "Effect of Postweld Heat Treatment on Toughness of the Heat Affected Zone in ASTM4130 Steel with Single-Pass Welding", Advanced Materials Research, Vols. 228-229, pp. 975-980, 2011
Online since
April 2011
Export
Price
$32.00
Share

In order to see related information, you need to Login.

In order to see related information, you need to Login.

Authors: Tian Hui Zhang, Hong Cai Fu, Wen Min Liu, Yun Chun Cheng, Ren Ping Xu
Abstract:The influence of weld heat input on weld joint between B610CF and 16MnR steel using shielded metal arc welding method was investigated by...
421
Authors: Hong Yun Zhao, Li Zhou, Bo Chen, Guo Dong Wang
Abstract:The medium and heavy plate of 800 MPa grade ultra-fine grained steel was welded by CO2 gas shielded welding using large line...
3345
Authors: Long Fei Zuo, Zhan Lei Wei, Ri Ni, Ben Ma, Zi Dong Wang
Chapter 1: Material Science and Engineering
Abstract:A kind of 1000MPa low carbon bainitic steel belonged to the Fe-Cu-Nb series was hot rolled and aged, the influence of aging temperatures on...
376