期刊
ENGINEERING FRACTURE MECHANICS
卷 78, 期 1, 页码 13-26出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.engfracmech.2010.10.005
关键词
Circumferential notch tensile technique; Stress corrosion cracking; Threshold stress intensity factor; Simulated heat affected zone; Crack growth rate
类别
资金
- Australian Research Council
The threshold stress intensity factor for stress corrosion cracking (K-ISCC) of the simulated heat affected zone (HAZ) of mild steel in caustic solution has been determined using circumferential notch tensile (CNT) technique. The HAZ microstructure produced upon manual metal arc welding of grade 250 steel was simulated over a length of 35 mm of CNT specimens, using a thermo-mechanical simulator. Inter- and trans-granular stress corrosion cracking has been confirmed using a scanning electron microscope. The results presented here validate the ability of CNT technique for the determination of K-ISCC of HAZ and Base metal. Crack growth rates have also been determined using CNT technique. Further, the effect of microstructures on K-ISCC and crack growth rate is discussed in the present study. The determined K-ISCC of Base metal and simulated heat affected zone in 30% caustic solution is 24 and 45 MPa m(1/2), respectively. (C) 2010 Elsevier Ltd. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据