12Cr1 MoV钢的可逆回火脆性非平衡晶界偏聚机制研究

Translated title of the contribution: Study of reverse temper embrittlement NGS mechanism in steel 12CrlMoV

Qing Fen Li*, Li Li, Er Bao Liu, Jun Wang, Xiao Xue Xu, Yan Bo Wang

*Corresponding author for this work

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

According to the non-equilibrium grain-boundary segregation kinetics curves of phosphorus in steel 12CrlMoV was found recently in an experimental investigation, a series of Charpy impact tests were performed on specimens at the segregation process, the critical time and the desegregation process. The DBTT values of different holding time specimens were measured. Experimental results show that overaging appears in this steel. That is, the degree of embrittlement increases first and then decreases with isothermal aging time. The reverse temper embrittlement non-equilibrium grain-boundary segregation (NGS) mechanism was analyzed, and a reverse temper embrittlement NGS mechanism for steel 12CrlMoV was built, which proved a method for brittle fracture forecast and control of steel.

Original languageChinese
Pages (from-to)451-456
Number of pages6
JournalHarbin Gongcheng Daxue Xuebao/Journal of Harbin Engineering University
Volume25
Issue number4
Publication statusPublished - Aug 2004
Externally publishedYes

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Keywords

  • Charpy impact tests
  • Ductile to brittle transition temperature (DBTT)
  • Grain-boundary segregation
  • Non-equilibrium grain-boundary segregation (NGS) mechanism
  • Temper embrittlement

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