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首页> 外文会议>Materials Science and Technology Conference >Strain Variations of AISI 4340 Steel Undergoing Metallurgical Transformations During Induction Hardening Heat Treatment
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Strain Variations of AISI 4340 Steel Undergoing Metallurgical Transformations During Induction Hardening Heat Treatment

机译：感应硬化热处理过程中AISI 4340钢的冶金转化的应变变化

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Heat treatment of steels using Induction Hardening (IH) is done to increase the strength of the material at the outer surface while preserving intact the inner material properties i.e. tenacity. The general purpose of the research is to predict the residual stresses and deformations due to Induction Hardening of gears. The specific goal in this paper is to compute the deformation of the AISI4340 steel taking into account metallurgical transformations. During heating, temperature and time dependent austenite transformation occurs. On the other hand, during quenching instantaneous martensitic transformation happens. The occurrence of the mentioned metallurgical transformations affects the deformations and the stresses in the heat treated material. Based on the thermal cycle, the calculation of the strain variations are computed using the finite element software COMSOL. A good match is achieved between calculated strain values and theoretical values.
机译：使用感应硬化（IH）的钢的热处理以增加外表面上的材料强度，同时保持完整的内部材料特性即韧度。该研究的一般目的是预测由于齿轮的感应硬化而导致的残余应力和变形。本文的具体目标是考虑冶金转化的AISI4340钢的变形。在加热期间，发生温度和时间依赖性奥氏体转化。另一方面，在淬火期间，在瞬间的马氏体转变发生期间。提到的冶金转化的发生影响了热处理材料中的变形和应力。基于热循环，使用有限元软件COMSOL计算应变变型的计算。计算出的应变值和理论值之间实现了良好的匹配。

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