| 两相质量比对粉末冶金双相不锈钢显微组织与力学性能的影响 |
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| 引用本文： | 张鹏,王智勇,尚峰,李化强,贺毅强. 两相质量比对粉末冶金双相不锈钢显微组织与力学性能的影响[J]. 粉末冶金技术, 2020, 38(4): 269-274. DOI: 10.19591/j.cnki.cn11-1974/tf.2019060003 |
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| 作者姓名： | 张鹏 王智勇 尚峰 李化强 贺毅强 |
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| 作者单位： | 1.江苏海洋大学工程训练中心, 连云港 222005 |
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| 基金项目： | 江苏省研究生科研创新计划资助项目KYCX19-2308江苏省产学研前瞻性联合研究项目BY2018210淮海工学院自然科学基金资助项目Z2017001连云港市521人才工程项目ZKK201805连云港市海燕计划资助项目18-QD-013 |
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| 摘 要： | 将316L奥氏体不锈钢粉末与430铁素体不锈钢粉末分别按照80:20、65:35、50:50质量比混合,采用冷等静压成型方法制备了双相不锈钢,研究了奥氏体和铁素体起始粉末质量比对双相不锈钢组织结构和力学性能的影响。结果表明:当奥氏体和铁素体起始粉末质量比为65:35,烧结温度1350℃,保温时间60 min时,双相不锈钢综合力学性能较好,其中,抗拉强度为847 MPa,屈服强度为281 MPa,硬度为HV 207,断后伸长率为37.5%。
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| 关 键 词： | 冷等静压 双相不锈钢 显微组织 力学性能 |
| 收稿时间： | 2019-06-12 |
Effect of two phase mass ratio on the microstructure and mechanical properties of duplex stainless steel fabricated by powder metallurgy |
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| Affiliation: | 1.Engineering Training Center, Jiangsu Ocean University, Lianyungang 222005, China2.School of Mechanical Engineering, Jiangsu Ocean University, Lianyungang 222005, China |
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| Abstract: | Duplex stainless steels were fabricated by the cold isostatic pressing using the 316L austenite stainless steel powders and 430 ferrite stainless steel powders mixed by the mass ratio of 80:20, 65:35, and 50:50, respectively. The effect of the primary powder mass ratio of austenite to ferrite on the microstructure and mechanical properties of the duplex stainless steels were studied. The results show that, when the primary powder mass ratio of austenite to ferrite is 65:35, the sintering temperature is 1350℃, and the holding time is 60 min, the duplex stainless steels have the better comprehensive mechanical properties with the tensile strength of 847 MPa, the hardness of HV 207, the yield strength of 281 MPa, and the elongation of 37.5%. |
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