脉冲爆炸-等离子体技术对TC1钛合金组织和性能的影响  

Effects of Pulse Detonation-plasma Technology on Microstructure and Propertie of TC1 Titanium Alloy

作　　者：张明铭 陈乐平[1] 陆磊[2] 余玖明[2] 付青峰[2] Zhang Mingming;Chen Leping;Lu Lei;Yu Jiuming;Fu Qingfeng(School of Aeronautical Manufacturing Engineering,Nanchang Hangkong University;Institute of Applied Physics,Jiangxi Academy of Science)

机构地区：[1]南昌航空大学航空制造工程学院 [2]江西省科学院应用物理研究所

出　　处：《特种铸造及有色合金》2023年第3期349-353,共5页Special Casting & Nonferrous Alloys

基　　金：国家自然科学基金资助项目(51961015);江西省重大科技研发专项基金资助项目(20194ABC28011);江西省重点研发计划(20192BBE50033)。

摘　　要：以TC1钛合金为研究对象,在使用的能量大小不变时,采用Nb和Ta作为电极,探究了脉冲爆炸-等离子体技术(PDT)对TC1钛合金的改性效果和机理。使用Ta电极与Nb电极对TC1钛合金进行PDT处理,对处理后的TC1钛合金物相、组织与性能进行观察和测试,发现经PDT处理后试样表层形成了一层改性层,在改性层表面形成了TiN、NbN2、TiC、TaN、TaO等新相。改性层组织随使用电极不同发生改变,使用Ta电极处理后的改性层组织为层片状组织,使用Nb电极处理后的改性层组织为网篮状组织。对试样硬度和耐磨性能进行测试,发现经PDT处理后,试样硬度最高提升了2.2倍,耐磨性能最高提升了48.0%。The modification effect and mechanism of pulsed explosion-plasma technology(PDT)on TC1 titanium alloy was explored with Nb and Ta as electrodes using constant energy.The phase,microstructure and properties of the TCl titanium alloy after PDT treatment by Ta and Nb electrode were observed and tested.The results indicate that a modification layer is formed on the surface of the specimen after PDT treatment,on which new phases such as TiN,NbN2,TiC,TaN,TaO are generated.The structure of modified layer is also transformed with the type of electrodes.The modified layer treated with Ta electrode presents a lamellar microstructure,while that with Nb electrode presents a basketweave structure.After hardness and wear resistance testing,the results reveal that the hardness of the specimen is increased up to 2.2 times,and the wear resistance is increased by 48.0%after PDT treatment.

关 键 词：PDT TC1钛合金 网篮状组织 层片状组织 硬度 耐磨性能 

分 类 号：TG146.23[一般工业技术—材料科学与工程] TQ316.65[金属学及工艺—金属材料]