Comparative Corrosion Behavior of Five Microstructures (Pearlite, Bainite, Spheroidized, Martensite, and Tempered Martensite) Made from a High Carbon Steel

被引：80

作者：

Katiyar, Prvan Kumar ^{[1
]}

Misra, S. ^{[2
]}

Mondal, K. ^{[1
]}

机构：

[1] Indian Inst Technol, Dept Mat Sci & Engn, Kanpur 208016, Uttar Pradesh, India

[2] Indian Inst Technol, Dept Civil Engn, Kanpur 208016, Uttar Pradesh, India

来源：

METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE | 2019年 / 50A卷 / 03期

关键词：

CEMENTITE;

D O I：

10.1007/s11661-018-5086-1

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The present work discusses the comparative corrosion behavior of five microstructures of steels, namely, pearlite, bainite, spheroidized, martensite, and tempered martensite, which have been processed, respectively, by air cooling, isothermal transformation, spheroidizing, quenching, and tempering of a steel with composition 0.70C, 0.24Si, 1.12Mn, 0.026P, 0.021S, 0.013Nb, 0.0725Ta, and 97.7Fe (all are in wt pct). Dynamic polarization and alternating current (AC) impedance spectroscopic tests in freely aerated 3.5 pct NaCl solution show that the corrosion resistance of the steel specimens consisting of the preceding five microstructures decreases in the following sequence: pearlitic - bainitic - spheroidized - martensitic - tempered martensitic steels. The variation in the corrosion rate has been attributed to the shape, size, and distribution of the ferrite and cementite.

引用

页码：1489 / 1501

页数：13

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