中国物理B ›› 2015, Vol. 24 ›› Issue (6): 66103-066103.doi: 10.1088/1674-1056/24/6/066103

• CONDENSED MATTER: STRUCTURAL, MECHANICAL, AND THERMAL PROPERTIES • 上一篇    下一篇

Structural and magnetic transition in stainless steel Fe-21Cr-6Ni-9Mn up to 250 GPa

柳雷a, 侯琪玥a, 张毅a, 敬秋民a, 王志刚a, 毕延a, 徐济安a, 李晓东b, 李延春b, 刘景b   

  1. a National Key Laboratory of Shock Wave and Detonation Physics, Institute of Fluid Physics,China Academy of Engineering Physics, Mianyang 621900, China;
    b Institute of High Energy Physics, Chinese Academy of Science, Beijing 100049, China
  • 收稿日期:2014-10-30 修回日期:2015-01-20 出版日期:2015-06-05 发布日期:2015-06-05
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Grant Nos. U1230201, 11274281, and 11304294), the Industrial Technology Development Program, China (Grant No. 9045140509), and the Funds from the Chinese Academy of Sciences (Grant Nos. KJCX2-SW-N03 and KJCX2-SW-N20).

Structural and magnetic transition in stainless steel Fe-21Cr-6Ni-9Mn up to 250 GPa

Liu Lei (柳雷)a, Hou Qi-Yue (侯琪玥)a, Zhang Yi (张毅)a, Jing Qiu-Min (敬秋民)a, Wang Zhi-Gang (王志刚)a, Bi Yan (毕延)a, Xu Ji-An (徐济安)a, Li Xiao-Dong (李晓东)b, Li Yan-Chun (李延春)b, Liu Jing (刘景)b   

  1. a National Key Laboratory of Shock Wave and Detonation Physics, Institute of Fluid Physics,China Academy of Engineering Physics, Mianyang 621900, China;
    b Institute of High Energy Physics, Chinese Academy of Science, Beijing 100049, China
  • Received:2014-10-30 Revised:2015-01-20 Online:2015-06-05 Published:2015-06-05
  • Contact: Liu Lei E-mail:leoleu.hp@gmail.com
  • About author:61.66.Dk; 61.50.Ks; 75.30.Kz
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant Nos. U1230201, 11274281, and 11304294), the Industrial Technology Development Program, China (Grant No. 9045140509), and the Funds from the Chinese Academy of Sciences (Grant Nos. KJCX2-SW-N03 and KJCX2-SW-N20).

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摘要： Stainless steel Fe-21Cr-6Ni-9Mn (SS 21-6-9), with ～ 21% Cr, ～ 6% Ni, and ～ 9% Mn in weight percentage, has wide applications in extensive fields. In the present study, SS 21-6-9 is compressed up to 250 GPa, and its crystal structures and compressive behaviors are investigated simultaneously using the synchrotron angle-dispersive x-ray diffraction technique. The SS 21-6-9 undergoes a structural phase transition from fcc to hcp structure at ～ 12.8 GPa with neglectable volume collapse within the determination error under the quasi-hydrostatic environment. The hcp structure remains stable up to the highest pressure of 250 GPa in the present experiments. The antiferromagnetic-to-nonmagnetic state transition of hcp SS 21-6-9 with the changes of inconspicuous density and structure, is discovered at ～ 50 GPa, and revealed by the significant change in c/a ratio. The hcp SS-21-6-9 is compressive anisotropic: it is more compressive in the c-axis direction than in the a-axis direction. Both the equations of states (EOSs) of fcc and hcp SS 21-6-9, which are in accordance with those of fcc and hcp pure irons respectively, are also presented. Furthermore, the c/a ratio of hcp SS 21-6-9 at infinite compression, R∞, is consistent with the values of pure iron and Fe–10Ni alloy.

关键词: Fe-21Cr-6Ni-9Mn, structure transition, magnetic transition, x-ray diffraction

Abstract: Stainless steel Fe-21Cr-6Ni-9Mn (SS 21-6-9), with ～ 21% Cr, ～ 6% Ni, and ～ 9% Mn in weight percentage, has wide applications in extensive fields. In the present study, SS 21-6-9 is compressed up to 250 GPa, and its crystal structures and compressive behaviors are investigated simultaneously using the synchrotron angle-dispersive x-ray diffraction technique. The SS 21-6-9 undergoes a structural phase transition from fcc to hcp structure at ～ 12.8 GPa with neglectable volume collapse within the determination error under the quasi-hydrostatic environment. The hcp structure remains stable up to the highest pressure of 250 GPa in the present experiments. The antiferromagnetic-to-nonmagnetic state transition of hcp SS 21-6-9 with the changes of inconspicuous density and structure, is discovered at ～ 50 GPa, and revealed by the significant change in c/a ratio. The hcp SS-21-6-9 is compressive anisotropic: it is more compressive in the c-axis direction than in the a-axis direction. Both the equations of states (EOSs) of fcc and hcp SS 21-6-9, which are in accordance with those of fcc and hcp pure irons respectively, are also presented. Furthermore, the c/a ratio of hcp SS 21-6-9 at infinite compression, R∞, is consistent with the values of pure iron and Fe–10Ni alloy.

Key words: Fe-21Cr-6Ni-9Mn, structure transition, magnetic transition, x-ray diffraction

中图分类号:  (Alloys )

  • 61.66.Dk
61.50.Ks (Crystallographic aspects of phase transformations; pressure effects) 75.30.Kz (Magnetic phase boundaries (including classical and quantum magnetic transitions, metamagnetism, etc.))