| 粉末冶金高氮超级奥氏体不锈钢的开发 |
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| 引用本文： | 钟海林,况春江,郝权,匡星. 粉末冶金高氮超级奥氏体不锈钢的开发[J]. 材料热处理学报, 2012, 33(1): 64-68 |
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| 作者姓名： | 钟海林 况春江 郝权 匡星 |
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| 作者单位： | 钢铁研究总院,北京100081／安泰科技股份有限公司,北京100081 |
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| 摘 要： | 采用气雾化法制备高氮超级奥氏体不锈钢粉末,利用热等静压成形。结果表明,热等静压后,材料完全致密,而σ及Cr2 N两相的析出导致材料塑性、韧性及耐蚀性显著下降。材料经1200℃×1 h固溶处理后,力学性能及耐蚀性能大大提高,抗拉强度Rm为1050 MPa、屈服强度Rp0.2为735 MPa,伸长率A为57.0%,自腐蚀电位Ecorr为0.946 V。
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| 关 键 词： | 粉末冶金 不锈钢 氮 点腐蚀 |
Development of high nitrogen super austenitic stainless steels by powder metallurgy process |
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| ZHONG Hai-lin,KUANG Chun-jiang,HAO Quan,KUANG Xing. Development of high nitrogen super austenitic stainless steels by powder metallurgy process[J]. Transactions of Materials and Heat Treatment, 2012, 33(1): 64-68 |
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| Authors: | ZHONG Hai-lin KUANG Chun-jiang HAO Quan KUANG Xing |
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| Affiliation: | 1,2(1.China Iron and Steel Research Institute,Beijing 100081,China; 2.Advanced Technology & Materials Corporation Ltd,Beijing 100081,China) |
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| Abstract: | The high nitrogen super austenitic stainless steel powders were prepared by gas atomization and formed by hot isostatic pressing(HIP).The results show that the steel is fully dense after HIP.As the precipitation of σ and Cr2N phases,plasticity,toughness and corrosion resistance of the steel decreases significantly.The properties and corrosion resistance of the steel are greatly improved after solution treatment at 1200 ℃ for 1 h,for which tensile strength,yield strength,elongation and self-corrosion potential are 1050 MPa,735 MPa,57% and 0.946 V,respectively. |
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| Keywords: | powder metallurgy stainless steel nitrogen pitting corrosion. |
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