热处理对一种新型耐磨铸钢组织与性能的影响

详细信息    查看全文 | 推荐本文 |

英文篇名：Influence of Heat Treatment on Microstructure and Properties of a New Type of Wear Resistant Cast Steel 作者：程腾飞 ; 孙浩 ; 徐京 ; 陈卓 ; 韦习成 ; 刘腾轼 英文作者：CHENG Tengfei;SUN Hao;XU Jing;CHEN Zhuo;WEI Xicheng;LIU Tengshi;School of Materials Science and Engineering,Shanghai University; 关键词：耐磨铸钢 ; 淬火 ; 回火 ; 显微组织 ; 力学性能 英文关键词：wear resistant cast steel;;quenching;;tempering;;microstructure;;mechanical property 中文刊名：SHJI 英文刊名：Shanghai Metals 机构：上海大学材料科学与工程学院; 出版日期：2019-05-31 出版单位：上海金属 年：2019 期：v.41;No.231 基金：上海大学联合大作业项目-耐磨铸钢的成分优化与耐磨性评价 语种：中文; 页：SHJI201903015 页数：5 CN：03 ISSN：31-1558/TF 分类号：77-80+84

摘要

对一种新型耐磨铸钢进行了不同温度的淬火和回火处理。淬火温度分别为850、880和910℃,回火温度分别为200、250和300℃。利用金相显微镜(OM)和扫描电子显微镜(SEM)观察并分析了试验钢热处理后的显微组织,同时测试了试验钢的洛氏硬度、显微硬度、耐磨性能和拉伸性能。结果表明:经不同温度淬火后,试验钢的组织均为板条马氏体;随着淬火温度的升高,试验钢的硬度先升高后降低,880℃淬火的钢硬度最高。经880℃淬火、不同温度回火的试验钢的组织均为回火马氏体;随着回火温度的升高,试验钢的硬度先增加后减小,抗拉强度逐渐升高,磨损量先减小后增加。经880℃淬火、250℃回火的试验钢的综合力学性能最佳。
        A new type of wear resistant cast steel was quenched from 850 ℃,880 ℃,910℃ and tempered at 200 ℃,250 ℃,300 ℃ respectively. The microstructures of steel after heat treatment were observed and analyzed by using optical microscope( OM) and scanning electron microscope( SEM),and the Rockwell hardness and microhardness tests,wear resistance and tensile property detection were also carried out. The results showed that the microstructure of test steel quenched from different temperatures was composed of lath martensite. With the increase of quenching temperature,hardness increased first and then decreased,and hardness of the sample quenched from 880 ℃ was the highest. The microstructure of test steel quenched from 880 ℃ and tempered at different temperatures was tempered martensite. With the increase of tempering temperature,hardness increased first and then decreased,tensile strength increased,and wear loss decreased first and then increased. The test steel quenched from 880 ℃ and tempered at 250 ℃exhibited optimum comprehensive mechanical properties.

引文

[1]王玉强,任鸣,张志强.新型高强度铸钢斗齿材料的研究与应用[J].工程机械文摘,2015(2):91-93.
    [2]姜利坤.新型低铬合金耐磨钢在挖掘机斗齿上的应用[J].铸造,2013,62(12):1225-1228.
    [3]程巨强.高强度铸钢斗齿材料的研制与应用[J].工程机械,2007,38(7):57-59.
    [4]李京丽.斗齿用低合金钢的优化热处理工艺研究[D].长沙:中南大学,2012.
    [5] WEN H. Formation mechanism of reversed austenite in low carbon martensitic stainless steel[J]. Steel Pipe,2004,33(6):66-70.
    [6]胡志军,赵小朋,杨弋涛.热处理工艺对低合金耐磨铸钢组织和性能的影响[J].铸造技术,2012,33(6):660-663.
    [7]贾玉丰,谢敬佩,王文焱,等.热处理工艺对高强韧耐磨铸钢组织和性能的影响[J].金属热处理,2009,34(12):27-31.
    [8]靳晓艳,计云萍,侯敬超,等.稀土对20MnCrNi2Mo耐磨铸钢组织及力学性能的影响[J].铸造,2015,64(4):303-306.
    [9]田学锋,孙广庭,荆余刚,等.回火温度对中碳低合金耐磨铸钢组织及性能的影响[J].铸造,2011,60(8):784-787,793.