Lead-induced stress corrosion cracking behavior of mechanically surface-treated alloy 690

Nana Li, San-Qiang Shi, Jingli Luo, Jian Lu, Ning Wang

Research output: Journal article publicationJournal articleAcademic researchpeer-review

3 Citations (Scopus)

Abstract

� 2016 The Author(s). Published by Informa UK Limited, trading as Taylor & Francis Group. Lead (Pb) is one of the impurities that cause stress corrosion cracking (SCC) of the tubing material in the steam generator (SG), the corrosion behavior of surface mechanical attrition treatment (SMAT) treated surface was measured for alloy 690 in simulated SG condition with and without Pb contamination. Even though the polarization curves indicated the corrosion potential of SMAT-processed specimens shifted negatively, the positive effect of SMAT on resistance of SCC was observed. The reduced susceptibility to lead-induced stress corrosion cracking may be attributed to the formation of stable passive film and the significant compressive stress on the surface induced by SMAT.
Original languageEnglish
Pages (from-to)180-184
Number of pages5
JournalMaterials Research Letters
Volume4
Issue number3
DOIs
Publication statusPublished - 30 Mar 2016

Keywords

  • Alloy 690
  • Nanocrystalline
  • PbSCC
  • SMAT

ASJC Scopus subject areas

  • Materials Science(all)

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