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首页> 外文期刊>Materials Science and Engineering >High strength and plasticity of AISI 430 ferritic stainless steel achieved by a recrystallization annealing before quenching and partitioning process
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High strength and plasticity of AISI 430 ferritic stainless steel achieved by a recrystallization annealing before quenching and partitioning process

机译：通过再结晶退火在淬火和分配过程之前实现AISI 430铁素体不锈钢的高强度和可塑性

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摘要

AISI 430 ferritic stainless steels treated by traditional bell furnace annealing exhibit good plasticity but low strength, which limits its application range. A new heat treatment process, a recrystallization annealing and quenching and partitioning (Q&P) process, was applied to AISI 430 ferritic stainless steel in this study. This type of process enabled AISI 430 ferritic stainless steel to have high strength while maintaining good plasticity. AISI 430 ferritic stainless steel can be used as a material for automobile body structures, and its application range has been greatly expanded. The Q&P860 × 5 sample had the best comprehensive performance: its strength was 730 MPa, its elongation after break was 19.4%, and its product of strength and elongation was 14.2 GPa%. After treatment by the Q&P process, the microstructure was composed of ferrite, martensite, and retained austenite. The fraction of each phase was determined, and it was observed that the fraction of retained austenite gradually increased as the recrystallization annealing temperature and time increased. M_(23)C_6 precipitates formed in both the martensite and retained austenite, and a large number of low-angle grain boundaries were also observed. The texture of the Q&P samples mainly comprised γ-texture and weak α-texture. Compared with the recrystallization annealing samples, the tensile strength of the Q&P samples was greatly improved, while the high degree of plasticity was maintained, and the yield plateau disappeared.
机译：AISI 430由传统钟式炉退火处理的铁素体不锈钢表现出良好的可塑性，但低强度，限制其应用范围。新的热处理工艺，重结晶退火和淬火和淬火和分配（Q＆P）工艺应用于本研究中的AISI 430铁素体不锈钢。这种类型的过程使AISI 430铁素体不锈钢具有高强度，同时保持良好的可塑性。 AISI 430铁素体不锈钢可用作汽车体形结构的材料，其应用范围大大扩展。 Q＆P860×5样品具有最佳的综合性能：其强度为730 MPa，突破后的伸长率为19.4％，其强度和伸长的产物为14.2GPa％。通过Q＆P处理处理后，微结构由铁氧体，马氏体和保留的奥氏体组成。确定每相的级分，观察到，随着再结晶退火温度和时间增加，逐渐增加的奥氏体逐渐增加。 M_（23）在马氏体和保留奥氏体中形成的C_6沉淀物，并且还观察到大量的低角度晶界。 Q＆P样本的纹理主要包括γ-纹理和弱α纹理。与重结晶退火样品相比，Q＆P样品的拉伸强度大大提高，而保持高度的可塑性，产量高原消失。

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  • 来源
    《Materials Science and Engineering》 |2021年第13期|141191.1-141191.12|共12页
  • 作者

    Lixin Meng; Huihu Lu; Wenqi Li; Hongkui Guo; Jing Tian; Wei Liang;

  • 作者单位

    College of Materials Science and Engineering Taiyuan University of Technology Taiyuan 030024 PR China Shanxi Key Laboratory of Advanced Magnesium-based Materials Taiyuan University of Technology Taiyuan 030024 PR China;

    School of Mechanical Engineering North University of China Taiyuan 030051 PR China;

    College of Materials Science and Engineering Taiyuan University of Technology Taiyuan 030024 PR China Shanxi Key Laboratory of Advanced Magnesium-based Materials Taiyuan University of Technology Taiyuan 030024 PR China;

    College of Materials Science and Engineering Taiyuan University of Technology Taiyuan 030024 PR China Shanxi Key Laboratory of Advanced Magnesium-based Materials Taiyuan University of Technology Taiyuan 030024 PR China;

    College of Materials Science and Engineering Taiyuan University of Technology Taiyuan 030024 PR China Shanxi Key Laboratory of Advanced Magnesium-based Materials Taiyuan University of Technology Taiyuan 030024 PR China;

    College of Materials Science and Engineering Taiyuan University of Technology Taiyuan 030024 PR China Shanxi Key Laboratory of Advanced Magnesium-based Materials Taiyuan University of Technology Taiyuan 030024 PR China Instrumental Analysis Center of Taiyuan University of Technology PR China;

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  • 正文语种 eng
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  • 关键词

    Ferritic stainless steels; QP; Retained austenite; Texture; Mechanical properties;

    机译：铁素体不锈钢;Q＆P;保留奥氏体;质地;机械性能;

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