摘要
本文利用Gleeble-1500热/力模拟机测试0.13％C钢连铸坯的高温力学性能,比较了凝固法,模拟法和加热法对测试结果的影响。结果表明,连铸坯存在1200℃～T_M(熔点)及700～1000℃两个脆性温区,脆性温区的产生与凝固组织及晶界脆化有关。在1300℃以上温区,相同试验温度下,力学性能随二次枝晶臂间距增加而降低。模拟温度高于1340℃时,可准确模拟连铸坯900～1200℃温区的力学性能变化。
High-temperatu mreechanical property of 0.13 %C continuous casting strand was investigated on the Gleeble-1500 thermal/mechanical simulator. Moreover, different test results of solidifying method, simulating method and heating method were compared in this paper. The results show that there are two embritling temperature ranges, 1200 ℃-Tm (melting point) and 700 -1000℃.The forming of embrittling temperature range is conceined with solidified structure and embrittling grain boundary. When the temperature is above 1300℃, the mechanicat property decreases with the increase of secondary dendritic spacing on the same test temperature. Whens imulation temper-ature is above 1340℃, the proper change of mechanical property during solidifying and cooling processes can be obtained by simulating method.
出处
《钢铁研究学报》
CAS
CSCD
北大核心
1993年第3期15-20,共6页
Journal of Iron and Steel Research
基金
国家自然科学基金
关键词
连铸坯
力学性质
碳素钢
continuous casting strand, mechanicat property, embrittling temperature range
