Stainless steel clad plate manufactured by explosive bonding is widely used in the chemical industry, but cracks are often initiated in the clad layer. Repair welding is a popular method to repair the cracked zone. But residual stresses are generated inevitably, which can lead to further cracking. How to decrease the residual stress is critical to ensure the structure integrity. This paper studies a method to reduce weld residual stresses by water jet peening (WJP) in 304 stainless steel clad plate. The effect of impact pressure is discussed. A sequential coupling finite element method is developed to simulate the as-welded residual stresses, which is validated by impact indentation measurement. Then, a user subroutine is developed to model the moving load generated by WJP. The results show that the WJP can introduce compressive stresses on the metal surface and thus decrease the as-welded tensile stresses. As the maximum impact pressure at the center of impact (P0) increases, the residual stresses are decreased greatly and even change to compressive stresses. There is a critical value P0, which changes the tensile stresses to compressive stresses. As P0 increases to 1.4 times the yield strength of 304 stainless steel, the initial tensile stresses on the surface have been decreased to compressive stresses.
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June 2015
Research-Article
Effect of Impact Pressure on Reducing the Weld Residual Stress by Water Jet Peening in Repair Weld to 304 Stainless Steel Clad Plate
Wenchun Jiang,
Wenchun Jiang
1
State Key Laboratory of Heavy Oil Processing,
College of Chemical Engineering,
e-mail: jiangwenchun@126.com
College of Chemical Engineering,
China University of Petroleum (East China)
,Qingdao 266555
, China
e-mail: jiangwenchun@126.com
1Corresponding author.
Search for other works by this author on:
Yun Luo,
Yun Luo
State Key Laboratory of Heavy Oil Processing,
College of Chemical Engineering,
College of Chemical Engineering,
China University of Petroleum (East China)
,Qingdao 266555
, China
Search for other works by this author on:
Huai Wang,
Huai Wang
College of Mechanical and
Electronic Engineering,
Electronic Engineering,
China University of Petroleum (East China)
,Qingdao 266555
, China
Search for other works by this author on:
B. Y. Wang
B. Y. Wang
College of Mechanical and
Electronic Engineering,
Electronic Engineering,
China University of Petroleum (East China)
,Qingdao 266555
, China
Search for other works by this author on:
Wenchun Jiang
State Key Laboratory of Heavy Oil Processing,
College of Chemical Engineering,
e-mail: jiangwenchun@126.com
College of Chemical Engineering,
China University of Petroleum (East China)
,Qingdao 266555
, China
e-mail: jiangwenchun@126.com
Yun Luo
State Key Laboratory of Heavy Oil Processing,
College of Chemical Engineering,
College of Chemical Engineering,
China University of Petroleum (East China)
,Qingdao 266555
, China
Huai Wang
College of Mechanical and
Electronic Engineering,
Electronic Engineering,
China University of Petroleum (East China)
,Qingdao 266555
, China
B. Y. Wang
College of Mechanical and
Electronic Engineering,
Electronic Engineering,
China University of Petroleum (East China)
,Qingdao 266555
, China
1Corresponding author.
Contributed by the Pressure Vessel and Piping Division of ASME for publication in the JOURNAL OF PRESSURE VESSEL TECHNOLOGY. Manuscript received June 3, 2014; final manuscript received January 20, 2015; published online March 6, 2015. Assoc. Editor: Wolf Reinhardt.
J. Pressure Vessel Technol. Jun 2015, 137(3): 031401 (6 pages)
Published Online: June 1, 2015
Article history
Received:
June 3, 2014
Revision Received:
January 20, 2015
Online:
March 6, 2015
Citation
Jiang, W., Luo, Y., Wang, H., and Wang, B. Y. (June 1, 2015). "Effect of Impact Pressure on Reducing the Weld Residual Stress by Water Jet Peening in Repair Weld to 304 Stainless Steel Clad Plate." ASME. J. Pressure Vessel Technol. June 2015; 137(3): 031401. https://doi.org/10.1115/1.4029655
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