It is found that the steel resistances to fatigue crack growth increase with the rising of the tempering temperature when it is higher than the second hardening peak temperature.
发现高于二次硬比峰温度回火时，此钢的疲劳裂纹扩展阻力随回火温度升高而增加。
At the same time, some other oxycompound groups, such as carbonyl group, aldehyde group and ketone group, appear or increase with temperature rising.
与此同时，醛、酮、酯类羰基、芳香酮、醛类羰基等类含氧基团或者从无到有，或者官能团数量不断增加。
The results show that:(1)With the increase of reaction temperature, the content of non-aromatic was rised slowly and the trend of thiophene content was first rising then falling.
研究结果表明：（1）随着温度的升高，非芳烃含量缓慢升高，噻吩的含量呈“先降后升”趋势。
应用推荐