铈对S32750超级双相不锈钢低温冲击性能的影响

来源 :金属热处理 | 被引量 : 0次 | 上传用户：nihaonan

【摘要】

：

通过夏比冲击和示波冲击方法分析了两种Ce含量S32750超级双相不锈钢在20～-100℃范围内的冲击吸收能量及能量构成差异,利用Aspex自动扫描电镜分析仪、SEM、EDS研究了Ce对钢中夹杂物的改性行为及冲击断裂行为的影响.结果表明:高Ce试验钢的抗低温冲击断裂性能明显优于低Ce试验钢,前者韧脆转变温度相较后者下降16℃;Ce的添加使得试验钢-80℃冲击吸收能量提高45 J,其主要源于裂纹扩展能Wp的提升(76％).冲击断口形貌观察和夹杂物分析结果显示,低Ce试验钢在-80℃冲击断口表现为完全解理断裂;

【作者】

：

保顺刘荣佩王宝顺吴明华罗有心姚亮丰涵宋志刚

【机构】

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昆明理工大学材料科学与工程学院,云南昆明 650039;钢铁研究总院特殊钢研究所,北京 100081;昆明理工大学材料科学与工程学院,云南昆明 650039;浙江久立特材科技股份有限公司,浙

【出处】

：

金属热处理

【发表日期】

：

2021年11期

【关键词】

：

Ce 超级双相不锈钢低温冲击性能韧脆转变夹杂改性

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铈对S32750超级双相不锈钢低温冲击性能的影响

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