淬火速度对高强度弹簧钢组织与力学性能的影响
发布时间：2018-12-14 10:34
【摘要】：采用DIL805A相变仪结合光学显微镜(OM)、扫描电镜(SEM)和透射电镜(TEM)研究不同淬火速度对60Si2CrVAT弹簧钢显微组织、力学性能和马氏体转变点的影响。研究结果表明:在淬火速度从10℃/s增加800℃/s的过程中,随淬火速率的增加,马氏体块的宽度从666.0 nm减小至573.9 nm,马氏体板条的宽度从189.0 nm减少到147.3 nm。60Si2CrVAT弹簧钢的强度、塑性和硬度总体呈现先增加后降低的趋势,马氏体转变温度则呈先下降后增加的趋势,当冷速为200℃/s时,马氏体转变开始点温度最低而强度和塑性均达到最大,分别为1 924 MPa和26.4%,综合力学性能最好。淬火过程中产生的微纳米孪晶马氏体对提高材料的强塑性起到了促进作用。
[Abstract]:The effects of quenching speed on microstructure, mechanical properties and martensite transformation point of 60Si2CrVAT spring steel were studied by DIL805A phase transformation instrument, (OM), scanning electron microscope (SEM) and transmission electron microscope (TEM). The results show that the width of martensite block decreases from 666.0 nm to 573.9 nm, with the increase of quenching rate from 10 鈩，
本文编号：2378463
[Abstract]:The effects of quenching speed on microstructure, mechanical properties and martensite transformation point of 60Si2CrVAT spring steel were studied by DIL805A phase transformation instrument, (OM), scanning electron microscope (SEM) and transmission electron microscope (TEM). The results show that the width of martensite block decreases from 666.0 nm to 573.9 nm, with the increase of quenching rate from 10 鈩，
本文编号：2378463
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