The influence of heat treatment and resulting microstructures on the thermophysical properties of martensitic steels
The influence of heat treatment and resulting microstructures on the thermophysical properties of martensitic steels
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DOI：
10.1007/s10853-013-7665-2
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发表时间：
2013-12-01
影响因子：
4.5
通讯作者：
Theisen, Werner
中科院分区：
文献类型：
--
作者：
Wilzer, Jens;Luedtke, Fabian;Theisen, Werner
本研究探讨了热处理对三种不同工具钢室温导热系数的影响。结果表明，回火不仅对其热物性起决定性作用，而且热处理引起的导热系数的变化与合金化程度有关。与热扩散系数a相比，等压热容量c(P)对热处理的依赖程度较小。结果与由此产生的显微组织和高温回火条件下的CALPHAD计算进行了讨论。研究结果可用于刀具的热设计，特别是用于冲压硬化的刀具的量身定做的回火。
This research study investigates the influence of heat treatment on the thermal conductivities of three different tool steels at room temperature. The results reveal not only that tempering plays a decisive role in their thermophysical properties, but also that the changes in thermal conductivity due to heat treatment are dependent on the degree of alloying. Isobaric heat capacities c (p) are found to be less dependent on heat treatment than thermal diffusivities a. The results are discussed with respect to the resulting microstructures and, for high-tempered conditions, under consideration of Calphad calculations. The results are relevant for the thermal design of tools, in particular, for tailored tempering of tools used for press hardening.