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Development of air-hardening martensitic forging steels

机译：空气硬化马氏体锻造钢的研制

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摘要

A new alloy design for air-hardening forging steels has been investigated. Five laboratory melts with C contents between 0.15 and 0.19 wt. - % and a Mn content of 4 wt. - % distinguished by their Al (0.03/0.50), Ti (-/0.02), B (-/0.005), Mo (-/0.20) contents have been laboratory casted and forged into rectangular blocks with a cross section of 60 × 60 mm. After air cooling the tensile test properties, the Charpy toughness and the fatigue properties have been determined and compared to a Q+T steel as reference material. While the static mechanical properties are comparable to the reference grade, a small decrease in toughness and a significant increase in fatigue strength have been obtained. These findings are discussed with respect to the role of the individual alloying elements and their impact on microstructure and precipitation state.
机译：研究了用于空气硬化锻钢的新合金设计。五个实验室熔化C含量在0.15和0.19wt之间。 - ％和4重量％的Mn含量。 - 由其Al（0.03 / 0.50），Ti（ - / 0.02），B（ - / 0.20），Mo（ - / 0.20）含量的百分比，含量浇铸并锻造成矩形块，横截面为60×60毫米。在空气冷却时，拉伸试验性能，已经确定了夏比韧性和疲劳性能，并与Q + T钢作为参考材料进行比较。虽然静态机械性能与参考等级相当，但已经获得了韧性的小降低和疲劳强度的显着增加。这些发现是关于各种合金元素的作用及其对微观结构和沉淀状态的影响。

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  • 来源
    《Materials Science and Engineering》 |2020年第may15期|139321.1-139321.6|共6页
  • 作者

    A. Gramlich; T. Schmiedl; S. Schoenborn; T. Melz; W. Bleck;

  • 作者单位

    Institut fuer Eisenhuettenkunde of RWTH Aachen University Intzestrasse 1 52072 Aachen Germany;

    Research Group System Reliability Adaptive Structures and Machine Acoustics of TV Darmstadt Magdalenenstrasse 4 64289 Darmstadt Germany;

    Fraunhofer Institute for Structural Durability and System Reliability LBV Bartningstrasse 47 64289 Darmstadt Germany;

    Research Group System Reliability Adaptive Structures and Machine Acoustics of TV Darmstadt Magdalenenstrasse 4 64289 Darmstadt Germany Fraunhofer Institute for Structural Durability and System Reliability LBV Bartningstrasse 47 64289 Darmstadt Germany;

    Institut fuer Eisenhuettenkunde of RWTH Aachen University Intzestrasse 1 52072 Aachen Germany;

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  • 原文格式 PDF
  • 正文语种 eng
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  • 关键词

    Martensite; Mechanical properties; Forging steels; Medium manganese steels;

    机译：马氏体;机械性能;锻钢;中等锰钢;

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