糊状区渗氮对Cr10Mn9Ni0.7合金氮含量及凝固相变过程的影响

doi:10.11896/j.issn.1005-023X.2018.04.014

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Abstract The effect of nitriding of Cr10Mn9Ni0.7 alloy in mushy zone on solidification, nitrogen content and phase transformation was investigated. The results showed that the nitrogen content raised with nitriding time, and the occurrence of gas pore defects was reduced. When the nitrogen pressure was 0.1 MPa, nitrogen content increased from 0.17% to 0.23%, while the porosity declined from 1.86% to 1.37%. When the nitrogen pressure was 0.4 MPa, nitrogen content increased from 0.29% to 0.37%, while the porosity declined from 1.41% to 1.06%. The mechanism of the nitrogen content improvement by nitriding in mushy zone can be ascribed to the facilitation of peritectic reaction and diffusion of nitrogen from liquid into austenite. The increase of the nitrogen content of channel like austenite in the residual liquid is another reason for the nitrogen content improvement. Melt holding in mushy zone can avoid the “ferritic trap”, and thus reduce the occurrence of the gas pore defects.

Key words： melt holding in mushy zone nitrogen content microstructure phase transformation

Published: 25 February 2018

CLC number:	TG142
	TG113

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	Articles by authors
	JIN Qinglin
	WANG Yang
	CAO Lei
	SONG Qunling

Cite this article:

JIN Qinglin,WANG Yang,CAO Lei, et al. Effect of Nitriding in Mushy Zone on the Nitrogen Content and Solidification Transformation of Cr10Mn9Ni0.7 Alloy[J]. Materials Reports, 2018, 32(4): 579-583.

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http://www.mater-rep.com/EN/10.11896/j.issn.1005-023X.2018.04.014 OR http://www.mater-rep.com/EN/Y2018/V32/I4/579

1 Simmons J W. Overview: High-nitrogen alloying of stainless steels[J].Materials Science and Engineering:A,1996,207(2):159.
2 Lo K H, Shek C H, Lai J K L. Recent developments in stainless steels[J].Materials Science and Engineering R:Reports,2009,65(4-6):39.
3 Liu H D, Wang D Z, Wei H D, et al. Research progress in high nitrogen austenite stainless steel[J].Special Steel,2009,30(4):45(in Chinese).
刘海定,王东哲,魏捍东,等.高氮奥氏体不锈钢的研究进展[J].特殊钢,2009,30(4):45.
4 Lang Y, Qu H, Chen H, et al. Research progress and development tendency of nitrogen-alloyed austenitic stainless steels[J].Journal of Iron and Steel Research(International),2015,22(2):91.
5 Lang Y P, Chen H T, Weng Y Q, et al. Applications of Thermo-Calc in research of high nitrogen austenitic stainless steels[J].Journal of Materials Engineering,2013(5):16(in Chinese).
郎宇平,陈海涛,翁宇庆,等.热力学计算在高氮奥氏体不锈钢研究中的应用[J].材料工程,2013(5):16.
6 Li H B. Metallurgical fundamental and properties of high nitrogen austenitic stainless steels[D].Shenyang:Northeastern University,2008(in Chinese).
李花兵.高氮奥氏体不锈钢的冶炼理论基础及其材料性能研究[D].沈阳:东北大学,2008.
7 Oshima T, Habara Y, Kuroda K. Efforts to save nickel in austenitic stainless steels[J].Transactions of the Iron and Steel Institute of Japan,2007,47(3):359.
8 Xiang H L, Huang W L, Liu D, et al. Effect of N content on microstructure and properties of 29Cr casting super duplex stainless steel[J].Acta Metallurgica Sinica,2010,46(3):304(in Chinese).
向红亮,黄伟林,刘东,等.N含量对29Cr铸造超级双相不锈钢组织及性能的影响[J].金属学报,2010,46(3):304.
9 Maier G G, Astafurova E G, Melnikov E V, et al. The effect of hydrogen on strain hardening and fracture mechanism of high-nitrogen austenitic steel[J].IOP Conference Series: Materials Science and Engineering,2016,140(1):12005.
10 Li J Y, Zhao P, Yanagimoto J, et al. Effects of heat treatment on the microstructures and mechanical properties of a new type of nitrogen-containing die steel[J].International Journal of Minerals,Metallurgy,and Materials,2012,19(6):511.
11 Li J, Liu H, Huang P. Effects of pre-precipitation of Cr2N on microstructures and properties of high nitrogen stainless steel[J].Journal of Central South University of Technology,2012,19(5):1189.
12 Sun G, Zhang Y, Sun S, et al. Plastic flow behavior and its relationship to tensile mechanical properties of high nitrogen nickel-free austenitic stainless steel[J].Materials Science and Engineering:A,2016,662:432.
13 García C, Martín F, Tiedra P De, et al. Pitting corrosion behaviour of PM austenitic stainless steels sintered in nitrogen-hydrogen atmosphere[J].Corrosion Science,2007,49(4):1718.
14 Zhang H, Wang D, Xue P, et al. Microstructural evolution and pitting corrosion behavior of friction stir welded joint of high nitrogen stainless steel[J].Materials & Design,2016,110:802.
15 Wang Y T, Ren Y B, Yang K, et al. Effects of high temperature nitriding on microstructure and mechanical properties of high nitrogen nickel-free stainless steel[J].Heat Treatment of Metals,2012(5):98(in Chinese).
王耘涛,任伊宾,杨柯,等.高温渗氮工艺对高氮无镍不锈钢组织及力学性能的影响[J].金属热处理,2012(5):98.
16 Cisneros M M A V. Development of austenitic nanostructures in high-nitrogen steel powders processed by mechanical alloying[J].Metallurgical and Materials Transactions A,2002,33(7):2139.
17 Zhang F, Li G Q, Zhu C Y. Pressurized induction melting of high nitrogen Fe-Cr-Mn-Ni austenite stainless steel[J].Special Steel,2005,26(5):13(in Chinese).
张峰,李光强,朱诚意.高氮Fe-Cr-Mn-Ni系奥氏体不锈钢的加压感应熔炼[J].特殊钢,2005,26(5):10.
18 Dong T L, Li G Q. Pressurized induction melting of Fe-Cr-V high nitrogen steels and its deoxidation with Al[J].Journal of Iron and Steel Research,2008,20(3):9(in Chinese).
董廷亮,李光强.加压感应熔炼Fe-Cr-V系高氮钢及其铝脱氧[J].钢铁研究学报,2008,20(3):9.
19 Wang S H, Wu Y H, Zhao D G. Effect of solidification pressure on nitrogen macro-segregation in high nitrogen steel[J].Foundry Technology,2013(7):848(in Chinese).
王书桓,吴彦辉,赵定国.凝固压力对高氮钢中氮宏观偏析的影响[J].铸造技术,2013(7):848.
20 Yang S, Lee Z. A method for predicting nitrogen gas pores in nitrogen alloying stainless steels[J].Materials Science and Engineering:A,2006,417(1-2):307.
21 Ridolfi M R, Tassa O. Formation of nitrogen bubbles during the solidification of 16—18% Cr high nitrogen austenitic stainless steels[J].Intermetallics,2003,11(11-12):1335.
22 Svyazhin A G A B. Critical nitrogen concentration in high-nitrogen steels for the production of a dense ingot[J].Metallurgist,2015,58(11):959.
23 Griesser S, Bernhard C, Dippenaar R. Effect of nucleation undercooling on the kinetics and mechanism of the peritectic phase transition in steel[J].Acta Materialia,2014,81:111.
24 Huang T, Jin Q L. Effect of melt holding in mushy zone on nitrogen content and microstructure of 201 austenitic stainless steel[J].Hot Working Technology,2016,45(19):87(in Chinese).
黄通,金青林.糊状区保温时间对201奥氏体不锈钢组织的影响[J].热加工工艺,2016,45(19):87.
25 Fu J W, Yang Y S. Solidification behavior in three-phase region of AISI 304 stainless steel[J].Materials Letters,2013,93:18.