热处理工艺对CM2高速钢组织性能的影响
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摘要
对CW6Mo5Cr4V2(CM2)高速钢进行了不同温度的淬火和回火处理。检测了热处理后CM2钢的硬度、冲击韧性和耐磨性能。结果表明,经1 150～1 250℃淬火并于550℃回火的CM2钢的硬度随淬火温度的升高先升高后下降。1 200℃淬火、550℃3次回火的CM2钢的硬度高达65. 4 HRC,且耐磨性与冲击韧性优异。CM2钢的磨损机制为粘着磨损、氧化磨损和磨粒磨损并存。
CW6Mo5Cr4V2( CM2) high speed steel was quenched from different temperatures and tempered at different temperatures. Hardness,impact toughness,and wear resistance of the CM2 steel after heat treatment were detected. From the detection results it was seen that hardness of the CM2 steel quenched from 1 150 ℃ to 1 250 ℃ and tempered at 550 ℃ first increased and then decreased with the increase of quenching temperature,and that the CM2 steel subjected to quenching from 1 200 ℃ followed by three separate tempering treatments at 550 ℃ exhibited as high hardness as65. 4 HRC,excellent wear resistance and impact toughness. The mechanism of failure for CM2 steel involved adhesive wear,oxidative wear and abrasive wear.
CW6Mo5Cr4V2( CM2) high speed steel was quenched from different temperatures and tempered at different temperatures. Hardness,impact toughness,and wear resistance of the CM2 steel after heat treatment were detected. From the detection results it was seen that hardness of the CM2 steel quenched from 1 150 ℃ to 1 250 ℃ and tempered at 550 ℃ first increased and then decreased with the increase of quenching temperature,and that the CM2 steel subjected to quenching from 1 200 ℃ followed by three separate tempering treatments at 550 ℃ exhibited as high hardness as65. 4 HRC,excellent wear resistance and impact toughness. The mechanism of failure for CM2 steel involved adhesive wear,oxidative wear and abrasive wear.
引文
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[2]吴立志.中国高速钢的发展[J].河北冶金,2015(11):1-8.
[3]周永坤,赵先锐,王晓军. M2高速钢钻头热处理工艺及切削性能[J].金属热处理,2015,40(5):155-158.
[4]尧登灿,张道达,熊伟,等.高速钢W6Mo5Cr4V2热处理工艺新探讨[J].热处理技术与装备,2016,37(6):26-28.
[5]LUO Y W,GUO H J,SUN X L,et al. Effects of austenitizing conditions on the microstructure of AISIM42 high-speed steel[J]. METALS Open Access Metallurgy Journal,2017,7(1):1-13.
[6]迟宏宵,马党参,占礼春,等.热处理对高速钢W6Mo5Cr4V3Co8组织和性能的影响[J].材料热处理学报,2012,33(12):105-109.
[7]周敏,厉勇,黄顺喆,等.奥氏体化温度对二次硬化渗碳钢组织与力学性能的影响[J].金属热处理,2017,42(2):108-112.
[8]孙元辉,孙易安.热处理工艺对高速钢组织性能的影响[J].热加工工艺,2011,40(18):156-159.
[9] LEE J H,OH C J,PARK W J,et al. Effects of tempering temperature on wear resistance and surface roughness of a high speed steel roll[J]. ISIJ International,2001,41(8):859-865.
[10] FU H G,QU Y H,XING J D,et al. Investigations on heat treatment of a high-speed steel roll[J]. Journal of Materials Engineering and Performance,2008,17(4):535-542.
[11]薛屺,易诚,周毅,等.淬火温度对高钒高速钢摩擦磨损性能的影响[J].金属热处理,2017,42(11):156-160.