0
Research Papers: Materials and Fabrication

Effect of Impact Pressure on Reducing the Weld Residual Stress by Water Jet Peening in Repair Weld to 304 Stainless Steel Clad Plate

[+] Author and Article Information
Wenchun Jiang

State Key Laboratory of Heavy Oil Processing,
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,
China University of Petroleum (East China),
Qingdao 266555, China

Huai Wang, B. Y. Wang

College of Mechanical and
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 137(3), 031401 (Jun 01, 2015) (6 pages) Paper No: PVT-14-1087; doi: 10.1115/1.4029655 History: Received June 03, 2014; Revised January 20, 2015; Online March 06, 2015

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.

FIGURES IN THIS ARTICLE
<>
Copyright © 2015 by ASME
Your Session has timed out. Please sign back in to continue.

References

Figures

Grahic Jump Location
Fig. 1

Repair weld sample (a) and finite element meshing (b)

Grahic Jump Location
Fig. 2

Cross-sectional macrostructure of the weld joint

Grahic Jump Location
Fig. 3

Sketching of the residual stress measurement by impact indentation method

Grahic Jump Location
Fig. 4

Modeling procedure

Grahic Jump Location
Fig. 5

Schematic figure of WJP

Grahic Jump Location
Fig. 6

Surface pressure distribution by impinging water jet

Grahic Jump Location
Fig. 7

The welding temperature contour on the model surface (a) and weld section (b)

Grahic Jump Location
Fig. 8

Residual stress distribution before and after WJP

Grahic Jump Location
Fig. 10

Effect of the maximum impact pressure at the center of WJP on equivalent plastic strain and residual stress

Grahic Jump Location
Fig. 9

Equivalent plastic strain (a) and elastic strain (b) along the weld surface before and after WJP

Tables

Errata

Discussions

Some tools below are only available to our subscribers or users with an online account.

Related Content

Customize your page view by dragging and repositioning the boxes below.

Related Journal Articles
Related eBook Content
Topic Collections

Sorry! You do not have access to this content. For assistance or to subscribe, please contact us:

  • TELEPHONE: 1-800-843-2763 (Toll-free in the USA)
  • EMAIL: asmedigitalcollection@asme.org
Sign In