硼含量及奥氏体化温度对P20B钢淬透性的影响

钢铁研究学报, 2008, 20(10): 40-0.

硼含量及奥氏体化温度对P20B钢淬透性的影响

陈卓 , 吴晓春 , 汪宏斌 , 闵永安 , 张洪奎

1.1. 上海大学材料科学与工程学院, 上海 200072；2. 宝山钢铁股份有限公司特殊钢分公司, 上海 200940

1.1. School of Materials Science and Engineering, Shanghai University, Shanghai 200072, China

2. 2. Special Steel Branch, Baoshan Iron and Steel Co Ltd, Shanghai 200940, China

关键词： P20B钢;硼含量;奥氏体化温度;淬透性

Effect of Boron Content and Austenitic Temperature on Hardenability of P20B Steel

CHEN Zhuo , WU Xiaochun , WANG Hongbin , MIN Yongan , ZHANG Hongkui

Keywords： P20B steel;boron content;austenitic temperature;hardenability

为提高P20B钢的淬透性，通过端淬试验研究了硼含量及奥氏体化温度对P20B钢淬透性的影响。结果表明，当硼含量在0000 9%~0002 3%范围时，P20B钢的淬透性得到提高；当硼含量超过0004 0%时，P20B钢的淬透性反而下降。奥氏体化温度在820~920 ℃范围时，随温度升高，P20B钢的淬透性显著提高。

In order to improve the hardenability of P20B steel, Jominy tests were conducted and the influence of the boron content and austenitic temperature on the hardenability of P20B steel was studied. The results showed that the hardenability of P20B steel was improved when the content of boron was in the range of 0000 9% to 0002 3%. But when the content of boron had exceeded 0004 0%, the hardenability of P20B steel couldn′t be improved any more. In the range of 820 ℃ to 920 ℃, the hardenability of P20B steel increased with the increase of the austenitic temperature.

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