摘要
本文在Gleeble——1500动态热-力模拟实验机上,采用凝固法和加热法,对0.11%C钢在凝固后的高温力学性能进行了研究。发现两种方法获得的结果有很大差异,确认凝固法研究钢的液态模锻过程产生的热裂纹,与实际更接近。结果表明,0.11%C钢在凝固后至900℃的冷却过程中存在两个脆性区,即凝固结束后到1450℃和1000～1250℃。它们分别和钢在凝固点下凝固组织脆性或奥氏体晶界析出大量细小夹杂物而造成晶界脆性有关。
This paper studies high-temperature mechanical properties of the steel containing 0.11 %C after solidifying by methods of solidifying and heating on Gleeble-1500 experimental machine. The results obtained by these two ways have many differencs. It is affirmed that solidifying method on studying hot-crack in molten steel forging is close real process. The results show that the steel containing 0.11%C have two brittleness zones between solidification and 900℃ during its quenching. One is from solidification to 145O℃. The other is from 1250℃ to 1000℃. They all relate to the brittleness of solidification structure and the latter relates to precipitation of massive fine inclusions at austenite grain boundarys.
出处
《钢铁》
CAS
CSCD
北大核心
1991年第8期54-57,67,共5页
Iron and Steel
