Paper Title:
Experimental Study on the Material Response of Laser Weldment under Dynamic Loading
  Abstract

The materials response of a laser beam welded joint from hot rolled DP600 steel plate to the dynamic loading has been experimentally studied by instrumented Charpy impact testing. Based on the impact force-displacement curve, Critical Crack Length, i.e. CCL and dynamic crack extension resistance curve, i.e. J-a were determined, describing the welding joint’s crack formation toughness and the dynamic crack behavior. It is shown that the difference of crack initiation and propagation between the HAZ and BM is not significant. In addition, the CCL of Welding Area, i.e. WA is multiple higher than that of HAZ and BM, which is also less dependent of low temperature. Moreover, the J-a curve of WA consists of two segments, the initial sudden ascending with linear feature and the subsequent slow rising. Furthermore, tearing module derived from the slope of J-a curve was discussed, indicating the material microstructure mechanism affected by the thermodynamic process of laser beam welding.

  Info
Periodical
Edited by
J. Quinta da Fonseca
Pages
49-54
DOI
10.4028/www.scientific.net/AMM.7-8.49
Citation
J. Fang, "Experimental Study on the Material Response of Laser Weldment under Dynamic Loading ", Applied Mechanics and Materials, Vols. 7-8, pp. 49-54, 2007
Online since
August 2007
Authors
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: Ji Lie Zhou, Jing Hua Yang, Yin Ye, Gang Ping Dai, Xin Yuan Peng
Abstract:The correlation among heat input (HI), microstructure and properties in heat affected zone of ASTM A572 GR.65 steel (GR.65 steel) was...
553
Authors: M.A. Khattak, M.A. Khan, Mohd Nasir Tamin
Abstract:Prolonged high temperature exposure of welded C-Mn steels is likely to cause microstructural changes leading to an inrease in the...
1379
Authors: Qing Ren Xiong, Jun Liu, Jian Xun Zhang, Yao Rong Feng, Wen Zhen Zhao
Abstract:The fracture toughness of different zones of X100 SAWL pipe was studied by three-point bend test method under different temperature. At the...
292
Authors: Cameron Munro, Allison E. Nolting, Xin Jin Cao, Priti Wanjara
Chapter 24: Welding & Joining
Abstract:High strength low alloy (HSLA) steel, namely HSLA-65, has shown promise as a replacement for more common high strength shipbuilding steels....
2992