Paper Title:
Experimental Study on the Effect of CGHAZ Microstructure on CTOD of High-Strength Steel EQ56
  Abstract

The CGHAZ Microstructure has great effect on the toughness of welding joints and CTOD. This paper discussed the relationship between the CGHAZ and CTOD .The samples, carried out on high-strength steel EQ56, were observed by scanning electron microscopy. The Microstructural analysis result shows CGHAZ microstructure of EQ56-5, presenting high CTOD with 0.272mm, is low-carbon lath martensite and little M-A constituent, which contribute to the better toughness of EQ56-5. CGHAZ microstructure of EQ56-4, presenting the low CTOD with 0.082 mm, contains M-A constituent. The M-A constituent makes the CGHAZ brittle. The crack would grow easily along the M-A grain boundaries.

  Info
Periodical
Chapter
Chapter 9: Welding and Mechanical Connections and Fracture
Edited by
Huixuan Zhang, Ye Han, Fuxiao Chen and Jiuba Wen
Pages
1874-1879
DOI
10.4028/www.scientific.net/AMM.117-119.1874
Citation
Z. Y. Xia, Z. M. Miao, T. Ma, G. Chen, S. Peng, "Experimental Study on the Effect of CGHAZ Microstructure on CTOD of High-Strength Steel EQ56", Applied Mechanics and Materials, Vols. 117-119, pp. 1874-1879, 2012
Online since
October 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: Liang Yun Lan, Chun Lin Qiu, De Wen Zhao
Abstract:This paper discussed the variation of microstructure at different locations of heat affected zone (HAZ) of a high strength steel welded joint...
852
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: Xiao Hai Zhang, Wen Bo Xu, Jia Wei Gu, Shi Hang Jiang
Chapter 9: Metals and Alloys in Industrial Applications
Abstract:Using optical microscopy、impact and tensile test,Study the effects of different quenching and tempering temperature on the microstructure and...
978