为了探究奥氏体化温度对晶粒尺寸和碳化物的影响,分别在780、800、820、840、860、880和900℃保温30min,油淬。为了探索奥氏体化时间的影响,在840℃下分别保温15、30、50和70min,油淬。
To investigate the effect of austenitizing temperature on grain size and carbides, heat preservation was carried out at 780, 800, 820, 840, 860, 880, and 900 ℃ for 30 minutes, followed by oil quenching. In order to explore the effect of austenitizing time, the samples were held at 840 ℃ for 15, 30, 50, and 70 minutes, and then oil quenched.