2012•Journal of Hefei University of TechnologyRequires access
Comparison of 4Cr13 and 7Cr17Mo martensitic stainless steel in terms of microstructure and performance
Gao Zhen
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Abstract
Microstructure,hardness and wear resistance of two martensitic stainless steel materials,namely 4Cr13 and 7Cr17Mo,subjected to quenching at different temperature between 980 ℃ and 1 100 ℃ were studied by means of optical microscope,SEM,Rockwell hardness tester and abrasion tester.The experimental results suggest the quenched microstructures of 4Cr13 and 7Cr17Mo are martensite,undissolved carbides and remained austenite.The content of carbides in two materials decreases with the increase of quenching temperature.Under the same quenching temperature,the content of undissolved carbides in 7Cr17Mo is higher giving rise to higher hardness and better wear resistance.