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OALib Journal期刊
ISSN: 2333-9721
费用：99美元
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高强贝氏体基体钒微合金化trip钢的性能
Keywords: 金属材料,钒微合金trip钢,残余奥氏体特征,贝氏体基体,力学性能
Abstract:
？对一种钒微合金化trip钢进行冷轧连续退火,研究了钢的组织特征和力学性能。结果表明,贝氏体基trip钢的组织由贝氏体/马氏体和少量的残余奥氏体组成。随着贝氏体区等温时间的延长,钢的抗拉强度下降,屈服强度和延伸率提高。残余奥氏体由块状向薄膜状转变,体积分数增加,薄膜状残余奥氏体主要分布在贝氏体板条间,厚度为50--90nm。在400℃等温180s连续退火钢板呈现出相对低抗拉强度(960mpa)、高屈服强度(765mpa)和高延伸率(22.0%)的特性,而且加工硬化指数(0.20)、各向异性指数(0.94)和强塑积(21120mpa.%)也较为优良。
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