摘要
通过粉末冶金和轧制变形的方法制备出TZM合金板材,对TZM合金板材进行不同温度的退火处理,研究了不同退火温度对TZM合金板材再结晶行为和力学性能的影响。结果表明:该TZM合金板的初始再结晶温度为1150℃,1250℃时完全再结晶化;当退火温度低于1100℃时,随着退火温度上升,TZM合金板材的室温硬度值、抗拉强度缓慢下降,延伸率和1100℃抗弯最大变形量缓慢增加,断口形貌呈塑性撕裂状断口;当退火温度在1100℃至1250℃范围内,随着退火温度的升高,TZM合金板材的室温硬度值、抗拉强度发生显著降低,同时延伸率和1100℃抗弯最大变形量显著上升,断口形貌也向河流状脆性断口转变;当退火温度达到1250℃后,随着退火温度的增加,TZM合金板材又呈现出室温硬度值、抗拉强度缓慢下降,延伸率和1100℃抗弯最大变形量缓慢增加的趋势。
The TZM alloy plate was prepared by powder metallurgy and rolling deformation process,and it was annealed at different temperatures.The effect of annealing temperature on the microstructure evolution and mechanical properties of the TZM alloy plate was studied.The results show that the initial recrystallization temperature of the TZM alloy plate is 1150℃,and it is completely recrystallized at 1250℃.When the annealing temperature is lower than 1100℃,with the increase of annealing temperature,the hardness value,tensile strength at room temperature of TZM alloy plates decrease slowly,while the elongation and the maximum bending deformation at 1100℃increase slowly,and the fracture morphology is plastic tear fracture.When the annealing temperature is in the range of 1100℃to 1250℃,with the increase of annealing temperature,the hardness value,tensile strength at room temperature decrease significantly,the elongation and the maximum bending deformation at 1100℃increase significantly,and the fracture morphology changes to fluvial brittle fracture.When the annealing temperature reaches 1250℃,the hardness value,tensile strength at room temperature of TZM alloy plates change to decrease slowly,while the elongation and the maximum bending deformation at 1100℃increase slowly.
作者
阚金锋
王广达
郭雪琪
张保红
吴朝圣
KAN Jin-feng;WANG Guang-da;GUO Xue-qi;ZHANG Bao-hong;WU Chao-sheng(Advanced Technology&Materials Co.,Ltd.,Beijing 100081,China;ATTL Advanced Materials Co.,Ltd.,Tianjin 301800,China)
出处
《中国钼业》
2021年第6期51-54,共4页
China Molybdenum Industry
关键词
TZM合金
轧制变形
退火处理
微观组织
力学性能
TZM alloy
rolling deformation
annealing treatment
microstructure
mechanical properties
