摘要
采用Gleeble1500热模拟实验机对A105的高温塑性进行了测定，并应用扫描电镜对拉断后试样的断口形貌进行了观察。应用Thermo-Calc热力学计算软件对实验钢在400～1600℃的主要析出相以及A1和A3温度进行了计算，根据计算结果选取不同测试温度的试样进行组织形貌的观察分析。结果表明：A105钢在600～900℃温度范围内的断面收缩率小于60％，处于第Ⅲ类脆性温度区。
High temperature hot ductility of A105 steel was investigated on a GleeblelS00 thermal simulator and the morphology of the tensile fracture was observed by using scanning electron microscopy. The equilibrium precipitation of main precipitates as well as A1 and A3 temperatures were calculated based on Thermo-Cale thermodynamic software. The mierostrueture of tensile samples tested at different temperatures chosen according to the computed results were observed. The results show that the reduction of area of A105 steel is lower than 60% in the range of 600 ℃ to 900 %, which belongs to the third temperature range of brittleness（ Ⅲ ）.
出处
《材料热处理学报》
EI
CAS
CSCD
北大核心
2013年第12期96-102,共7页
Transactions of Materials and Heat Treatment
基金
国家自然科学基金(50874007
51174020)
中央高校基本科研业务费专项资金(FRF-SD-12-010A)
关键词
A105钢
热塑性
热力学计算
断口形貌
显微组织
A105 steel
hot ductility
thermodynamic calculation
fracture morphology
microstructure
