张榕峻,张津,计鹏飞,连勇,王通,付恒,刘桐,顾新福.爆轰载荷下TB6钛合金组织及绝热剪切行为研究[J].稀有金属材料与工程,2023,52(4):1352~1360.[Rongjun Zhang,Jin Zhang,Pengfei Ji,You Lian,Tong Wang,Heng Fu,Tong Liu,Xinfu Gu.Microstructure and Adiabatic Shear Behavior of TB6 Titanium Alloy under Detonation Load[J].Rare Metal Materials and Engineering,2023,52(4):1352~1360.]
爆轰载荷下TB6钛合金组织及绝热剪切行为研究
投稿时间:2022-03-10  修订日期:2022-04-15
中文关键词:  绝热剪切带  爆轰平面波  TB6钛合金  动态再结晶
基金项目:国家自然科学基金资助(项目号51901016);中央高校基本科研业务费专项资金资助项目(FRF-MP-20-50,FRF-TP-20-007A3),国家自然科学基金项目(面上项目,重点项目,重大项目)
中文摘要:
      采用电子背散射衍射技术(EBSD)研究了双相TB6钛合金在超高应变速率的爆轰载荷下绝热剪切带(ASB)中心、过渡区及基体的组织、织构演变。结果表明,爆轰后α、β相晶粒尺寸均减小,α相产生{10"1" ?2}孪晶;ASB中心区β相晶粒发生了动态再结晶,晶粒尺寸400 nm,绝大部分为大角度晶界,位错密度最低,ASB中心发生α→β相变;{10"1" ?0}⊥AD、<0001>//RD or ND、{100}<110>旋转立方存在于除了爆轰基体的所有α或β相中;{10"1" ?0}<0001>、{10"1" ?0}<11"2" ?0>织构存在于原始组织的α相中,过渡区存在{10"1" ?0}<0001>、{10"1" ?0}<11"2" ?0>、{11"2" ?0}<0001>三种织构,{100}<001>伪立方织构只存在于爆轰基体的β相中;{100}//SD是ASB组织的共同特点,<0001>//AD织构存在于爆轰基体、{11"2" ?0}//SD、<0001>//SD织构存在于ASB中心;α相的{11"2" ?0}面、<0001>取向和β相的{110}面平行于ASB,这均不是密排面和密排方向,不利于合金的机械性能。
Microstructure and Adiabatic Shear Behavior of TB6 Titanium Alloy under Detonation Load
英文关键词:Adiabatic shear band  Detonation plane wave  TB6 titanium alloy  Dynamic recrystallization
英文摘要:
      The microstructure and texture evolution of the center of the adiabatic shear band (ASB), transition region and substrate of the dual-phase TB6 titanium alloy under detonation loading at ultra-high strain rates were investigated by electron backscatter diffraction (EBSD). The results show that the grain size of α and β phases decreases after detonation. The α phase produces {102} twins. The β phase grains in the central region of ASB undergo dynamic recrystallization, the grain size is 400 nm, most of them are high-angle grain boundaries, and the dislocation density is reduced. The α→β phase transition occurs in the ASB center. {100}⊥AD, <0001>//RD or ND, {100}<110> rotating cubes are present in all α or β phases except the detonation matrix; {100}<0001>, {100}<110> texture exists in the α phase of the original structure, and there are {100}<0001>, {100}<110>, {110}<0001> three textures in the transition region, {100}<001> pseudo cubic texture exists only in the β phase of the detonation matrix. {100}//SD is a common feature of ASB organization, <0001>//AD texture exists in the detonation matrix, {110}//SD, <0001>//SD texture exists in the ASB center. The {110} plane, <0001> orientation of α phase and the {110} plane of β phase are parallel to ASB direction, which are not belong to close-packed planes and dense-packed directions, which are not conducive to the alloy"s mechanical properties.
作者单位E-mail
张榕峻 北京科技大学新材料技术研究院 zhangrongjun@xs.ustb.edu.cn 
张津 北京科技大学 zhangjin@ustb.edu.cn 
计鹏飞 北京科技大学  
连勇 北京科技大学  
王通 北京科技大学材料科学与工程学院  
付恒 北京理工大学  
刘桐 北京科技大学  
顾新福 北京科技大学  
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