热力学计算在高氮奥氏体不锈钢研究中的应用
采用Thermo-Calc软件,计算了碳、铬、锰、镍元素和压力因素对22Cr高氮奥氏体不锈钢氮溶解度、凝固过程中相转变以及析出相的影响,并对设计的新型高氮奥氏体不锈钢组织及析出相进行了研究。结果表明：铬元素主要增加液态钢的氮溶解度,增加0.1%（质量分数）的碳即能显著增大奥氏体不锈钢在高温凝固时的最小氮溶解度。锰元素既增加液态钢中的饱和氮溶解度,又增加凝固初期的最小氮溶解度。适当的锰含量能扩大并稳定奥氏体相区,避免＂铁素体阱＂的出现。少量的镍含量既增加奥氏体不锈钢高温凝固时的最小氮溶解度,缩小高温δ铁素体存在的温度区间,也能使钢在室温下有完全的奥氏体组织。加压冶炼能有效促进氮溶解度。新型高氮奥...
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| Published in | 材料工程 no. 5; pp. 16 - 22 |
|---|---|
| Main Author | |
| Format | Journal Article |
| Language | Chinese |
| Published |
钢铁研究总院特殊钢研究所,北京,100081%中国金属学会,北京,100711
2013
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| Subjects | |
| Online Access | Get full text |
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| Abstract | 采用Thermo-Calc软件,计算了碳、铬、锰、镍元素和压力因素对22Cr高氮奥氏体不锈钢氮溶解度、凝固过程中相转变以及析出相的影响,并对设计的新型高氮奥氏体不锈钢组织及析出相进行了研究。结果表明：铬元素主要增加液态钢的氮溶解度,增加0.1%（质量分数）的碳即能显著增大奥氏体不锈钢在高温凝固时的最小氮溶解度。锰元素既增加液态钢中的饱和氮溶解度,又增加凝固初期的最小氮溶解度。适当的锰含量能扩大并稳定奥氏体相区,避免＂铁素体阱＂的出现。少量的镍含量既增加奥氏体不锈钢高温凝固时的最小氮溶解度,缩小高温δ铁素体存在的温度区间,也能使钢在室温下有完全的奥氏体组织。加压冶炼能有效促进氮溶解度。新型高氮奥氏体不锈钢的析出相主要为Cr23C6,Cr2N。采用热力学计算工具可以对高氮奥氏体不锈钢的冶炼、组织控制、热处理和热加工提供科学的指导。 |
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| AbstractList | 采用Thermo-Calc软件,计算了碳、铬、锰、镍元素和压力因素对22Cr高氮奥氏体不锈钢氮溶解度、凝固过程中相转变以及析出相的影响,并对设计的新型高氮奥氏体不锈钢组织及析出相进行了研究。结果表明：铬元素主要增加液态钢的氮溶解度,增加0.1%（质量分数）的碳即能显著增大奥氏体不锈钢在高温凝固时的最小氮溶解度。锰元素既增加液态钢中的饱和氮溶解度,又增加凝固初期的最小氮溶解度。适当的锰含量能扩大并稳定奥氏体相区,避免＂铁素体阱＂的出现。少量的镍含量既增加奥氏体不锈钢高温凝固时的最小氮溶解度,缩小高温δ铁素体存在的温度区间,也能使钢在室温下有完全的奥氏体组织。加压冶炼能有效促进氮溶解度。新型高氮奥氏体不锈钢的析出相主要为Cr23C6,Cr2N。采用热力学计算工具可以对高氮奥氏体不锈钢的冶炼、组织控制、热处理和热加工提供科学的指导。 TG142.71; 采用Thermo-Calc软件,计算了碳、铬、锰、镍元素和压力因素对22Cr高氮奥氏体不锈钢氮溶解度、凝固过程中相转变以及析出相的影响,并对设计的新型高氮奥氏体不锈钢组织及析出相进行了研究.结果表明:铬元素主要增加液态钢的氮溶解度,增加0.1％(质量分数)的碳即能显著增大奥氏体不锈钢在高温凝固时的最小氮溶解度.锰元素既增加液态钢中的饱和氮溶解度,又增加凝固初期的最小氮溶解度.适当的锰含量能扩大并稳定奥氏体相区,避免“铁素体阱”的出现.少量的镍含量既增加奥氏体不锈钢高温凝固时的最小氮溶解度,缩小高温δ铁素体存在的温度区间,也能使钢在室温下有完全的奥氏体组织.加压冶炼能有效促进氮溶解度.新型高氮奥氏体不锈钢的析出相主要为Cr23C6,Cr2N.采用热力学计算工具可以对高氮奥氏体不锈钢的冶炼、组织控制、热处理和热加工提供科学的指导. |
| Author | 郎宇平 陈海涛 翁宇庆 屈华鹏 |
| AuthorAffiliation | 钢铁研究总院特殊钢研究所,北京100081 中国金属学会,北京100711 |
| AuthorAffiliation_xml | – name: 钢铁研究总院特殊钢研究所,北京,100081%中国金属学会,北京,100711 |
| Author_FL | CHEN Hai-tao QU Hua-peng WENG Yu-qing LANG Yu-ping |
| Author_FL_xml | – sequence: 1 fullname: LANG Yu-ping – sequence: 2 fullname: CHEN Hai-tao – sequence: 3 fullname: WENG Yu-qing – sequence: 4 fullname: QU Hua-peng |
| Author_xml | – sequence: 1 fullname: 郎宇平 陈海涛 翁宇庆 屈华鹏 |
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| ClassificationCodes | TG142.71 |
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| Copyright | Copyright © Wanfang Data Co. Ltd. All Rights Reserved. |
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| DocumentTitleAlternate | Applications of Thermo-Calc in Research of High Nitrogen Austenitic Stainless Steels |
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| Keywords | alloy design 高氮奥氏体不锈钢 high nitrogen austenitic stainless steel 氮溶解度 Thermo Calc nitrogen solubility 合金设计 Thermo-Calc |
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| Notes | 11-1800/TB LANG Yu-ping,CHEN Hai-tao ,WENG Yu-qing ,QU Hua-peng（1 Institute for Special Steels,Central Iron and Steel Research Institute, Beiiing 100081, China ; 2 The Chinese Society for Metals,Beijing 100711,China） Thermo-Calc ; high nitrogen austenitic stainless steel ; nitrogen solubility; alloy design The Thermo-Calc software was used to calculate the ments including C, Cr, Mn and Ni on the solubility of nitrogen, lidification in high nitrogen austenitic stainless steel with 22% （ tures and precipitates of new designed high austenitic stainless show that Cr increases mainly the solubility of nitrogen in liquid influence of pressure factor and ele the phase transformation during so mass fraction） Cr. The microstruc- steel were studied also. The results steel. With about 0.1 %C the mini- mum solubility of nitrogen during higher solidification temperature is enhanced remarkably. Mn in- creases not only the solubility of nitrogen in liquid steel but also the minimum solubility of nitrogen during earlier solidif |
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| PublicationTitleAlternate | Journal of Materials Engineering |
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| PublicationYear | 2013 |
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| SubjectTerms | Thermo-Calc 合金设计 氮溶解度 高氮奥氏体不锈钢 |
| Title | 热力学计算在高氮奥氏体不锈钢研究中的应用 |
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