Relations of abrasion resistance and hardness of 16Cr-3C white irons with retained austenite content

Zhiping Sun, Rulin Zuo, Cong Li, Baoluo Shen, Shengji Gao, Sijiu Huang

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    Cite this article as:

    Zhiping Sun, Rulin Zuo, Cong Li, Baoluo Shen, Shengji Gao, and Sijiu Huang, Relations of abrasion resistance and hardness of 16Cr-3C white irons with retained austenite content, J. Univ. Sci. Technol. Beijing , 11(2004), No. 6, pp.539-544.
    Zhiping Sun, Rulin Zuo, Cong Li, Baoluo Shen, Shengji Gao, and Sijiu Huang, Relations of abrasion resistance and hardness of 16Cr-3C white irons with retained austenite content, J. Univ. Sci. Technol. Beijing , 11(2004), No. 6, pp.539-544.
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    Relations of abrasion resistance and hardness of 16Cr-3C white irons with retained austenite content

    • School of Materials Science and Engineering, Sichuan University, Chengdu 610065, China

    • School of Materials Science and Engineering, Chongqing University, Chongqing 400044, China

    • National Key Laboratory for Nuclear Fuel and Materials. Nuclear Power Institute of China, Chengdu 610041

    • China Sijiu Rare Earth Alloy Foundry, Shuangliu 610211, China

      通信作者:

      Zhiping Sun E-mail: Benz_sun@163.com

    中文摘要

    The relationship between the retained austenite content of the matrix in 16Cr-3C white irons and the abrasion resistance was investigated. The results show that: (1) the abrasion resistance can be improved by sub-critical heat treatment, which could be attributed to the decrease of the retained austenite content; (2) both the abrasion resistance and hardness can be improved by controlling the retained austenite content below 20%-30% and arrive at the maximum when the retained austenite content is reduced to about 10%; (3) the abrasion resistance decreases abruptly once the retained austenite content is lower than 10%, which stems from both the in situ transformation of (Fe, Cr)23C6 to M3C carbides and the formation of pearlitic matrix.

     

    Materials

    Relations of abrasion resistance and hardness of 16Cr-3C white irons with retained austenite content

    Author Affilications

      • School of Materials Science and Engineering, Sichuan University, Chengdu 610065, China

      • School of Materials Science and Engineering, Chongqing University, Chongqing 400044, China

      • National Key Laboratory for Nuclear Fuel and Materials. Nuclear Power Institute of China, Chengdu 610041

      • China Sijiu Rare Earth Alloy Foundry, Shuangliu 610211, China

    • Received: 05 April 2004;
    The relationship between the retained austenite content of the matrix in 16Cr-3C white irons and the abrasion resistance was investigated. The results show that: (1) the abrasion resistance can be improved by sub-critical heat treatment, which could be attributed to the decrease of the retained austenite content; (2) both the abrasion resistance and hardness can be improved by controlling the retained austenite content below 20%-30% and arrive at the maximum when the retained austenite content is reduced to about 10%; (3) the abrasion resistance decreases abruptly once the retained austenite content is lower than 10%, which stems from both the in situ transformation of (Fe, Cr)23C6 to M3C carbides and the formation of pearlitic matrix.

     

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