工程机械用Q1100钢的热处理工艺

来源 :金属热处理 | 被引量 : 0次 | 上传用户：yj8888888

【摘要】

：

以一种屈服强度为1100 MPa的高强度工程机械用钢为对象,研究了再加热淬火温度(880～980℃)和回火温度(200～650℃)对Q1100钢显微组织和力学性能的影响.结果表明,淬火温度从880℃升高至980℃,试验钢的平均奥氏体晶粒尺寸从8μm增加到24μm,试验钢的屈服强度和抗拉强度都呈先升高后降低的趋势,并在920℃时达到最大,而-40℃冲击性能则随之持续降低.试验钢经920℃淬火+200～650℃回火后,随着回火温度的提高,试验钢的马氏体板条合并,板条形貌逐渐模糊,碳化物数量和形貌也随之发生改变

【作者】

：

刘洪源吴光亮张永集

【机构】

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中南大学资源加工与生物工程学院,湖南长沙 410083

【出处】

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金属热处理

【发表日期】

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2021年11期

【关键词】

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工程机械用钢淬火回火显微组织力学性能

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