铜对塑料模具钢高温冷却过程相变和淬透性的影响

来源期刊：上海金属2010年第3期

论文作者：李丹 闵永安 吴晓春

文章页码：15 - 19

关键词：含铜模具钢； 高温冷却相变； 淬透性

Key words：Copper Mould Steel； High Temperature Cooling Transformation； Hardenability

摘    要：试验研究了Cu对高淬透性塑料模具钢淬透性的影响。结果表明:含铜和不含铜的试验钢都具有高淬透性;其中不含铜的T1钢奥氏体化后在冷速为0.03℃/s条件下,出现屈氏体;其它元素含量基本相同的含铜T2钢具有比T1更高的淬透性,在冷速为0.01℃/s条件下即能获得全马氏体。研究表明:Cu的添加可明显抑制奥氏体高温冷却过程向铁素体、珠光体的相变。

Abstract: The effect of Cu on the hardenability of plastic mould steel with high hardenability was studied.The results showed that both the free Cu T1 steel and T2 steel containing Cu owned the high hardenability.There were troostite appeared in T1 steel when cooling rate was 0.03℃/s.T2 steel had the lower C,Si,Mn,and Mo contents than that of T1 steel but showed a higher hardenability than Tl steel.There was martensite completely in T2 steel on the condition of 0.01℃/s cooling speed that meant the addition of Cu could inhibit the high temperature transformation strongly.