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首页> 外文会议>TMS annual meeting exhibition >Influence of Austenitizing Temperature and Time on Microstructure and Mechanical Properties of an YP460 Grade Crack Arrest Steel
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Influence of Austenitizing Temperature and Time on Microstructure and Mechanical Properties of an YP460 Grade Crack Arrest Steel

机译：奥氏体化温度和时间对YP460级防裂钢组织和力学性能的影响

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The influence of austenitizing temperature and austenitizing holding time on the microstructure and mechanical properties of a YP460 grade crack arrest steel was investigated. The first group specimens were austenitized at several temperatures ranging from 900 to 950 °C followed by water cooling. The second group specimens were austenitized at 900 °C with austenitizing holding time from 0.25 to 5 h followed by water cooling. Microstructure was characterized through optical microscopy. Tensile properties, hardness and plane strain fracture toughness of all these materials were determined and correlated with the microstructure. The results indicated that the austenitizing temperature influences the volume fraction of bainite and ferrite and then the mechanical properties. The volume fraction of bainite and ferrite and grain size are also affected by austenitizing time.
机译：研究了奥氏体化温度和奥氏体化保温时间对YP460级防裂钢组织和力学性能的影响。第一组试样在900至950°C的几个温度下进行奥氏体化，然后进行水冷。第二组试样在900°C下进行奥氏体化，保持时间为0.25至5 h，然后进行水冷。通过光学显微镜表征微观结构。测定了所有这些材料的拉伸性能，硬度和平面应变断裂韧性，并将其与微观结构相关联。结果表明，奥氏体化温度影响贝氏体和铁素体的体积分数，进而影响其力学性能。贝氏体和铁素体的体积分数以及晶粒尺寸也受奥氏体化时间的影响。

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