Effect of quenching and partitioning on the microstructure evolution and electrochemical properties of a martensitic stainless steel. (February 2016)

• Record Type: Journal Article
• Authors: Lu, Si-Yuan; Yao, Ke-Fu; Chen, Yun-Bo; Wang, Miao-Hui; Chen, Na; Ge, Xue-Yuan
• Is Part Of: Corrosion science. Volume 103(2016)
• Page Start: 95
• Page End: 104
• Publication Date: 2016-02
• Subjects: A. Stainless steel -- B. TEM -- B. Polarization -- B. EIS -- C. Pitting corrosion; Corrosion and anti-corrosives -- Periodicals; 620.11223
• DOI: 10.1016/j.corsci.2015.11.010
• Languages: English
• ISSNs: 0010-938X

Abstract

Highlights: Influence of quenching and partitioning process on stainless steel was studied. Pitting potentials of experimental steel partitioned at 350 and 450 °C were higher. Retained austenite and M3 C carbides existed in matrix of experimental steel. Retained austenite is beneficial for the corrosion resistance of stainless steel. Abstract: A 0.3C–13Cr martensitic stainless steel (MSS) was subjected to quenching and partitioning (Q&P) treatment. Due to the different thermodynamic condition from the standard constrained carbon equilibrium (CCE), both the carbides precipitation and the interface migration occur during the partitioning step in the Q&P treatment. However, a sufficient amount of austenite is still retained in the Q&P treated MSS. After being partitioned at 350 °C and 450 °C, the Q&P treated MSS exhibits better corrosion resistance than the same steel treated via conventional quenching and tempering (Q–T) treatment.