EFFECT OF WATER PENETRATION ON THE COOLING OF P/M JOMINY BARS

机译：透水对P / M摇杆冷却的影响

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Recent experimental results using an instrumented Jominy test on sintered P/M steels (5-10 v/o porosity) show that the cooling rate is higher than that measured in the counter part fuly dense (pore-free) compositions. Using a simple heat transfer model we show that reduced thermal diffusivity results in faster cooling near the quenched surface and slower cooling in the bulk of the material. In addition, we formulate a model that examines the possibility of enhanced heat transfer due to water penetration into the pores by capillary action.

机译：最近在烧结的P / M钢上使用仪器化的Jominy测试（5-10 v / o孔隙率）的实验结果表明，冷却速度要比对比例的完全致密（无孔）组合物中的冷却速度高。使用简单的传热模型，我们显示出降低的热扩散系数会导致淬火表面附近的冷却更快，而大部分材料的冷却更慢。此外，我们制定了一个模型，研究了由于毛细作用水渗透到孔隙中而导致传热增强的可能性。

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《2002 International Conference on Process Modeling in Powder Metallurgy amp; Particulate Materials Oct 28-29, 2002 Newport Beach, California》|2002年|p.92-98|共7页
会议地点 Newport Beach CA(US)
作者
Antonios Zavaliangos; Roger Doherty; Alan Lawley;
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Department of Materials Engineering Drexel University, Philadelphia, PA 19104;

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原文格式 PDF
正文语种 eng
中图分类机械、仪表工业;
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EFFECT OF WATER PENETRATION ON THE COOLING OF P/M JOMINY BARS

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