摘要
以Q235低碳钢和35K中碳钢为研究对象,研究了奥氏体化后的控冷工艺对Q235低碳钢和35K中碳钢显微组织与力学性能的影响。结果表明,在相同的工艺条件,Q235钢珠光体数量比35K钢的少,而铁素体含量多,35K中碳钢的显微硬度明显高于Q235钢;当Q235和35K钢棒空冷至中间某一过渡温度再进行淬火处理,可以极大的提高钢棒的抗拉强度和屈服强度,而断后伸长率略有降低。
The effects of austenitic cooling process on microstructure and mechanical properties of Q235 low carbon steel and 35K medium carbon steel were studied. The results show that the number of pearlite of Q235 steel is less than that of 35K steel and the content of ferrite is more. The microhardness of 35K medium carbon steel is higher than Q235 steel under the same process conditions. When air cooling of Q235 and 35K steel bars to a transition temperature in the middle is followed by quenching, the tensile strength and yield strength of steel bars can be greatly improved, while the elongation after breaking is slightly reduced.
作者
唐元继
折启耀
TANG Yuanji1, SHE Qiyao2(1. Department of Mechanical and Automotive Technology, Guangxi Vocational and Technical College, Nanning 530226, China; 2. Department of Materials Engineering, Guilin University of Technology, Guilin 541004, China)
出处
《铸造技术》
CAS
2018年第10期2375-2378,2388,共5页
Foundry Technology
关键词
建筑钢棒
热处理
控冷
组织
性能
steel for building
heat-treatment
controlled cooling
microstructure
property
