Improved wear resistance of medium carbon microalloyed bainitic steels

被引：48

作者：

Chattopadhyay, C. ^{[1
]}

Sangal, S. ^{[1
]}

Mondal, K. ^{[1
]}

Garg, A. ^{[1
]}

机构：

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

来源：

WEAR | 2012年 / 289卷

关键词：

Steel; Electron microscopy; Hardness; Sliding wear; Wear testing; ROLLING SLIDING WEAR; RAIL STEEL; BEHAVIOR; MICROSTRUCTURE; CONTACT;

D O I：

10.1016/j.wear.2012.03.005

中图分类号：

TH [机械、仪表工业];

学科分类号：

120111 [工业工程];

摘要：

A study on wear behavior of two medium carbon microalloyed steels has been carried out. Isothermal annealing has been performed on these steels in order to make pearlitic and bainitic morphologies and wear behavior of both the morphologies has been studied. The isothermal transformation temperatures for producing both the phases are chosen to produce finer to finest length scales in the pearlitic and bainitic microstructures. Further, the specimens are tested under dry sliding wear condition with varying normal load from 20 to 50 N and frequency from 5 to 11 Hz. Wear volume and wear rate of bainitic microstructure have been observed one order of magnitude less than that of the pearlitic steel. This is attributed to the higher hardness, higher dislocation density and much finer distribution of austenite-cementite aggregate phase throughout the bainite microstructure. (C) 2012 Elsevier B.V. All rights reserved.

引用

页码：168 / 179

页数：12

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