Thermal analysis of low alloy Cr-Mo steel
Thermal analysis of low alloy Cr-Mo steel
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低合金Cr-Mo钢的热分析
DOI：
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发表时间：
2004
期刊：
影响因子：
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通讯作者：
M. Rajić
中科院分区：
文献类型：
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作者：
M. Gojić;M. Sućeska;M. Rajić
本文介绍了低合金铬钼钢的热分析结果。分析方法为膨胀法、差热分析(DTA)和差示扫描量热法(DSC)。用热膨胀仪和差热分析法测得的钢样在加热过程中的AC1和AC3温度基本一致。冷却产生的马氏体组织在503K开始显现，淬火样品的回火表明，在473~573K之间存在第二回火阶段，该阶段的热容从0.48降至0.32Jg-1K-1，这是由于热消耗导致过渡碳化物转化的结果。在373~673K温度范围内，淬火样品的热容恢复到0.42~0.47J·g~(-1)K~(-1)之间。
The paper deals with results of thermal analysis of low-alloyed chromium-molybdenum steel. The methods of analysis were dilatometry, differential thermal analysis (DTA) and differential scanning calorimetry (DSC). The Ac1 and Ac3 temperatures of the steel samples measured by dilatometry and DTA during the heating period were in good agreement. Generated by cooling a martensitic structure first became apparent at 503 K. Tempering of the as-quenched samples showed the presence of the second tempering stage in the region between 473 and 573 K. At that stage heat capacity decreased from 0.48 to 0.32 J g-1 K-1, as a result of conversion of transition carbide due to heat consumption. After normalization of the as-quenched samples the heat capacity values were restored to between 0.42 and 0.47 J g-1 K-1 in the temperature range from 373 to 673 K.