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Surface Integrity of 2304 Duplex Stainless Steel After Different Grinding Operations
Dept of Materials Science, Dalarna University, Sweden.
Linköping University, Department of Management and Engineering, Engineering Materials. Linköping University, Faculty of Science & Engineering.
Jernkontoret, Stockholm.
2016 (English)In: Journal of Materials Processing Technology, ISSN 0924-0136, E-ISSN 1873-4774, no 229, 294-304 p.Article in journal (Refereed) Published
Abstract [en]

Surface integrity has significant effect on service performance of a component. In this study, the evolution of the surface and sub-surface changes induced by grinding duplex stainless steel (DSS) 2304 was studied with regard to the residual stress, the microstructure, surface roughness and surface defects. The results provide insights into the effect of abrasive grit size, grinding force and lubrication on the surface integrity. The abrasive grit size was found to have the largest influence. Surface defects, a highly deformed surface layer and the generation of tensile residual stresses along the grinding direction have been found to be the main types of damage induced by the grinding operation. Residual stresses induced by mechanical effects dominate over thermal effects in this study. The results obtained can be used to understand the contribution of surface condition and residual stress on failure of duplex stainless steels in service by fatigue or stress corrosion cracking.

Place, publisher, year, edition, pages
Elsevier, 2016. no 229, 294-304 p.
Keyword [en]
Surface integrity, grinding, duplex stainless steel 2304, residual stress
National Category
Manufacturing, Surface and Joining Technology
URN: urn:nbn:se:liu:diva-121843DOI: 10.1016/j.jmatprotec.2015.09.031ISI: 000367106000029OAI: diva2:859963

Funding agencies: Outokumpu stainless Research Foundation; Region Dalarna; Region Gavleborg; Lansstyrelsen Gavleborg; Sandvikens kommun; Jernkontoret; Hogskolan Dalarna

Available from: 2015-10-09 Created: 2015-10-09 Last updated: 2016-01-25

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