试样加工方式对超高强度钢300M室温拉伸检测结果的影响  

Effects of sample preparation method on the tensile testing results of ultra-high strength steel 300M at room temperature

作　　者：汪红晓[1] Wang Hongxiao(Quality Management Department,Pangang Group Jiangyou Changcheng Special Steels Co.,Ltd.,Jiangyou 621701,Sichuan,China)

机构地区：[1]攀钢集团江油长城特殊钢有限公司质量管理部,四川江油621701

出　　处：《特钢技术》2024年第2期50-53,共4页Special Steel Technology

摘　　要：研究了四种不同的试样加工方式对300M超高强度钢室温拉伸检测结果的影响,结果表明:毛坯车成M12×Φ6.0半成品试样,然后热处理,最后磨削加工成Φ5.0的成品试样,其室温拉伸强度指标最低、塑性指标最高,能最大程度地表征材料本身的力学性能;应选用该加工方式制作300M超高强度钢的室温拉伸测试试样,其他三种加工方式强度指标偏高,均不能准确表征材料本身的力学性能。The effects of four different sample preparation methods on the room temperature tensile testing results of 300M ultra-high strength steel was studied.The results showed that:the semi-finished M12×Φ6 sample was turned into a blank,then heat treated,and finally ground into a finished sample with a diameter ofΦ5.0.The room temperature tensile strength index was the lowest and the plasticity index was the highest,which can maximize the characterization of the material's mechanical properties;This preparation method should be used to produce room temperature tensile test specimens of 300M ultra-high strength steel.The other three preparation methods have higher strength indicators and cannot accurately characterize the mechanical properties of the material itself.

关 键 词：试样加工方式 300M 室温拉伸 

分 类 号：TG142.1[一般工业技术—材料科学与工程]