摘要
研究了热处理温度对?230 mm的TA16棒材微观组织、织构和力学性能的影响。结果表明:锻棒横纵向样原始组织为拉长的变形等轴组织,大晶粒内部分布着孪晶,横向样抗拉强度、屈服强度高于纵向样;随着退火温度的升高,横纵向样组织由拉长的变形晶粒逐渐趋于等轴化;原始锻态{10-12}拉伸孪晶含量最多,且随着热处理温度的升高,{10-12}拉伸孪晶在逐渐减少,当热处理温度升高至800℃时,孪晶完全消失,再结晶晶粒逐渐长大;原始锻态织构主要集中在{0001}//RD取向,与ND有一定夹角,当热处理温度升高至750℃时,织构强度降低,织构类型发生变化,集中在{0001}//ND取向,且与RD有一定夹角;且随着热处理温度的升高,横纵向样的抗拉强度、屈服强度、屈强比整体均呈下降趋势,延伸率逐渐升高。
The effect of heat treatment temperature on the microstructure,texture,and mechanical prop-erties of 0230 mm TA16 bar was studied.The results show that the original microstructure of the forged bar is an elongated and deformed equiaxed structure in both horizontal and vertical directions.Twin crystals are distributed inside the large grains.The tensile strength and yield strength of the trans-verse sample are higher than those of the longitudinal sample.With the heat treatment temperature in-creases,the transverse and longitudinal microstructures gradually shift from elongated deformed grains to equiaxed grains.The original forged(10-12)has the highest content of tensile twins,and as the heat treatment temperature increases,the(10-12)tensile twins gradually decrease.When the heat treatment temperature rises to 800 C,the twins completely disappear,and the recrystallized grains gradually grow.The original forged texture is mainly concentrated in the(0001)/RD orientation,with a certain angle with ND.When the heat treatment temperature rises to 750 C,the texture strength decreases and the texture type changes,concentrated in(0001)/ND orientation,with a certain angle with RD.As the heat treatment temperature increases,the overall tensile strength,yield strength,and yield ratio of the transverse and longitudinal samples show a decreasing trend,while the elongation gradually increases.
作者
范玉婷
彭力
李京懋
秦海旭
FAN Yuting;PENG Li;LI Jingmao;QIN Haixu(State Key Laboratory of Vanadium and Titanium Resources Comprehensive Utilization,Panzhihua 617000,Sichuan,China;Chengdu Advanced Metal Materials Industry Technology Research Institute Co.,Ltd.,Chengdu 610300,Sichuan,China)
出处
《钢铁钒钛》
北大核心
2025年第3期53-59,共7页
Iron Steel Vanadium Titanium
关键词
TA16钛合金
热处理
再结晶
孪晶
织构
抗拉强度
TA16
heat treatment
recrystallization
twin crystals
texture
tensile strength
作者简介
范玉婷,1994年出生,女,新疆昌吉人,硕士,从事钛合金产品开发研究工作,E-mail:2935021981@qq.com;通讯作者:彭力,1990年出生,男,四川遂宁人,博士,从事钛合金产品开发,E-mail:listen0812@163.com。
