热处理工艺对TA15钛合金冲击性能的影响  

Effect of Heat Treatment Processes on Impact Property of TA15 Alloy

作　　者：沙爱学[1] 李兴无[1] 储俊鹏[1] 温国华[2] 

机构地区：[1]北京航空材料研究院,北京100095 [2]沈阳飞机工业集团有限公司,辽宁沈阳110034

出　　处：《稀有金属》2006年第1期26-29,共4页Chinese Journal of Rare Metals

摘　　要：热处理工艺是调整TA15钛合金显微组织和力学性能的重要手段之一。以往文献较多地研究了热处理制度对TA15钛合金拉伸性能的影响。研究了退火温度对TA15钛合金锻件、棒材显微组织和冲击性能的影响,目的是通过改变退火温度调整合金的显微组织参量,改善TA15钛合金冲击性能。其结果表明:提高退火温度可以增加初生α相尺寸和次生α相片层厚度,从而提高合金的冲击性能。特别是对小规格锻件,退火温度从810℃提高到850℃,冲击值可提高10 J.cm-2以上。Heat treatment process is one of the most important methods to justify the microstructure and mechanical properties of TA15 alloy. A lot of work were done to show the effect of heat treatment on tensile property of TA 15 alloy. The effect of anneal temperature on microstructure and impact property of TA15 alloy forge and bar was studied to show the possibility of impact property improvement and microstructure parameter modification through changing anneal temperature. The results show that impact property can be improved by increasing the size of preliminary α-phase and secondary α-phase when annealing temperature goes up. Especially for the forges of small size, the impact value can be increased for more than 10 J·cm^-2 when the anneal temperatures rises up from 810 to 850℃.

关 键 词：钛合金 冲击性能 退火温度 TA15钛合金 

分 类 号：TG146.23[一般工业技术—材料科学与工程]