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首页> 外文期刊>Materials Science and Engineering >Toughening mechanism in 5%Mn and 10%Mn martensitic steels treated by thermo-mechanical control process
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Toughening mechanism in 5%Mn and 10%Mn martensitic steels treated by thermo-mechanical control process

机译：通过热机械控制过程处理5％Mn和10％MN马氏体钢中的增韧机理

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摘要

A thermomechanical control process (TMCP) was performed for two types of medium-Mn martensitic steels to investigate the effect of microstructure control on fracture behavior. The TMCPed 5%Mn-0.1%C steel (mass%) exhibited a slight improvement in toughness, and the partially occurring intergranular fracture was suppressed completely owing to the elongated prior austenite grains. On the other hand, the TMCPed 10%Mn-0.1%C steel exhibited a remarkably enhanced low-temperature toughness with separation, in which a large number of sub-cracks were observed parallel to the impact direction on the main fracture surface. The separation induced by the elongated prior austenite grains reduced the triaxial stress at the crack tip, which in turn contributed to improved toughness. Furthermore, the ultra-refined microstructure obtained by the combination of the γ→ε→α' martensitic transformation and TMCP without recrystallization improved the toughness of 10%Mn-0.1%C steel.
机译：对两种类型的培养基-MN马氏体钢进行热机械控制过程（TMCP），以研究微观结构控制对裂缝行为的影响。 TMCPED 5％MN-0.1％C钢（质量％）表现出耐韧性的略微改善，并且由于细长的先前奥氏体晶粒完全抑制了部分发生的晶间骨折。另一方面，TMCPED 10％MN-0.1％C钢表现出显着增强的低温韧性，分离，其中观察到大量的亚裂纹与主骨折表面上的碰撞方向平行。由细长的先前奥氏体晶粒诱导的分离在裂纹尖端的三轴应力下降，这反过来导致改善韧性。此外，通过γ→ε→α'马氏体转化和TMCP的组合而获得的超精制微结构改善了10％Mn-0.1％C钢的韧性。

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  • 来源
    《Materials Science and Engineering》 |2021年第22期|141058.1-141058.10|共10页
  • 作者

    Takuya Maeda; Shohei Okuhata; Kyosuke Matsuda; Takuro Masumura; Toshihiro Tsuchiyama; Hiroyuki Shirahata; Yuzo Kawamoto; Masaaki Fujioka; Ryuji Uemori;

  • 作者单位

    Research Center for Steel Kyushu University 744 Motooka Nishi Fukuoka 8190395 Japan Steel Research Laboratories Nippon Steel Corporation 20-1 Shintomi Futtsu-city Chiba 293-8511 Japan;

    Department of Materials Science and Engineering Kyushu University 744 Motooka Nishi Fukuoka 819-0395 Japan;

    Department of Materials Science and Engineering Kyushu University 744 Motooka Nishi Fukuoka 819-0395 Japan;

    Department of Materials Science and Engineering Kyushu University 744 Motooka Nishi Fukuoka 819-0395 Japan;

    Department of Materials Science and Engineering Kyushu University 744 Motooka Nishi Fukuoka 819-0395 Japan;

    Steel Research Laboratories Nippon Steel Corporation 20-1 Shintomi Futtsu-city Chiba 293-8511 Japan;

    Steel Research Laboratories Nippon Steel Corporation 20-1 Shintomi Futtsu-city Chiba 293-8511 Japan;

    Steel Research Laboratories Nippon Steel Corporation 20-1 Shintomi Futtsu-city Chiba 293-8511 Japan;

    Research Center for Steel Kyushu University 744 Motooka Nishi Fukuoka 8190395 Japan;

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  • 原文格式 PDF
  • 正文语种 eng
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  • 关键词

    Medium manganese steel; Thermomechanical control process; Martensitic transformation; Triplex microstmcture; Toughness; Fracture;

    机译：中型锰钢;热机械控制过程;马氏体转型;Triplex Microsture;韧性;断裂;

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