变形温度和冷却速度对TA15合金组织性能的影响研究  

Effect of Deformation Temperature and Cooling Rate on Microstructure and Performance of TA15 Alloy

作　　者：张晓冬[1] 樊立伟[2] 解向军[2] 

机构地区：[1]南京航空航天大学经济管理学院,江苏南京210016 [2]中国人民解放军驻沈阳飞机工业(集团)有限公司军事代表室,辽宁沈阳110034

出　　处：《飞机设计》2009年第6期76-80,共5页Aircraft Design

摘　　要：本项目研究了变形温度、冷却速度对原始坯料为片状组织的TA15合金显微组织和性能的影响。随着变形温度(1 080～930℃)的降低,及变形后冷却速度(空冷～水冷)的加快,TA15合金的室温抗拉强度、延伸率及断面收缩率均呈上升趋势。β区变形的镦粗试样为片状组织,在大变形区和自由变形区,1 080℃变形时β晶粒的动态再结晶程度比1030℃高。两相区变形镦粗试样的显微组织为过渡型组织,难变形区和大变形区及自由变形区组织差别较大。The effect of deformation temperature and cooling rate on microstructure ＆ performance of TA15 alloy, with lamellar microstructure as the raw billet, is studied. Decreased formation temperature from 1080℃ to 930℃ and accelerated cooling rate from air cooling to water cooling make the room temperature tensile strength, elongation and section shrinkage of TA15 alloy increased. The microstructure is laminated when the upset test specimen is deformed in β phase field. The degree of dynamic recrystallization deformed at 1080℃ is higher than at 1030℃ in severe or free deformation area of upset test specimen. The transition structure is obtained when the upset test specimen is deformed in two-phase field. There is considerable difference in the microstructures between severe or free deformation area and hard deformation area due to the difference of deformation degree.

关 键 词：变形温度 冷却速度 低倍组织 显微组织 TA15合金 

分 类 号：V215.7[航空宇航科学与技术—航空宇航推进理论与工程]