摘要
研究了硅及热处理因素对中碳低合金贝氏体钢的力学性能及组织的影响.实验结果表明:含硅量为0.7-1.7%的实验钢在280-320℃范围内等温适当的时间,获得贝氏体+奥氏体组织,具有优良的综合机械性能;含2.7%硅时获得的组织为粗大的粒状贝氏体,因而使奥-贝实验钢的性能下降;而对含2.7%硅的奥-贝实验钢经空冷及空冷回火后,得到的组织为先共析铁素体加珠光体组织,因而其性能明显次于等温淬火的实验钢.
The effect of the silicon content and heat treatment on the structures and mechanical properties of mid - carbon low - alloying bainitic steel was studied. The sample steels, which include 0.7 - 1.7% Si and austempered at 280 - 320℃ for apposite time has the best synthetic mechanical properties. Accrete apposite silicon can obtain the fine needle like bainite and plate like hainite, where have some retained austenite, but add too much silicon （up to 2.7% ） will deteriorate the mechanical properties of steel. The mechanical properties of high silicon bonded steel by austempering are better than those of the same silicon content by air-cooling or tempering.
出处
《佳木斯大学学报（自然科学版）》
CAS
2005年第4期659-663,共5页
Journal of Jiamusi University：Natural Science Edition
关键词
奥-贝钢
等温淬火
粒状贝氏体
硅
bainitic steel
austempering
granular bainite
silicon
