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首页> 外文期刊>International Journal of Microstructure and Materials Properties >The estimation of temperature and hardness distribution in heat-treated complex-shaped components
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The estimation of temperature and hardness distribution in heat-treated complex-shaped components

机译：热处理后的复杂形状零件的温度和硬度分布的估算

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摘要

The quality or obtainable characteristics of any heat-treated component depend on the extent of the temperature distribution over the entire surface and cross-section of the component exposed during the different stages of heat treatment. It becomes more critical in the case of complex-shaped components, such as gears, for the shape plays a major role in controlling the distribution of temperature. This work presents a temperature distribution analysis using the Finite Element Method (FEM) and mathematical modelling approaches, carried out on gears during quenching in different quenchants. The temperature distribution data thus obtained from both analyses are used to draw cooling curves. The phase transformation kinetics is studied by superimposing the cooling curves on the Time-Temperature-Transformation (TTT) diagram of the material. The hardness achievable on the gears is obtained by estimating the martensite content using the Koistinen-Marburger model and the Avrami model.
机译：任何热处理过的部件的质量或可获得的特性取决于在热处理的不同阶段暴露的部件的整个表面上的温度分布范围和横截面。在形状复杂的零件（例如齿轮）的情况下，这一点变得尤为重要，因为形状在控制温度分布中起着主要作用。这项工作介绍了使用有限元方法（FEM）和数学建模方法进行的温度分布分析，这些方法是在不同淬火剂淬火过程中对齿轮进行的。从两次分析中获得的温度分布数据用于绘制冷却曲线。通过将冷却曲线叠加在材料的时间-温度-转变（TTT）图上来研究相变动力学。齿轮上可达到的硬度是通过使用Koistinen-Marburger模型和Avrami模型估算马氏体含量获得的。

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