摘要
通过在TC4粉末中加入变质剂B,进行了激光熔覆沉积实验。在沉积过程中引入了感应加热,研究了不同工艺条件下TC4熔覆层显微组织的变化。结果表明,当变质剂B和感应加热同时作用时,TC4熔覆层的晶粒细小且分布均匀、无明显β柱状晶,微观组织呈典型的网篮组织。当感应加热温度为900℃,B的质量分数分别为0.1%,0.05%和0.025%时,TC4熔覆层的组织由大量片状α相和少量初生α相组成,晶粒的长度为11~18μm,宽度为4.40~6.90μm。
The experiment of laser cladding deposition is conducted via the addition of modifier B to TC4 powder. The induction heating is introduced during the deposition process,and the microstructure change of the TC4 cladding layers under different process conditions is investigated. The results show that,when the modifier B and the induction heating both take roles,the obtained grains are fine,the distribution is uniform,there are no obvious β columnar crystals,and the microstructure shows a typical basket-weave one. When the induction heating temperature is 900 ℃ and the mass fraction of B is 0. 1%,0. 05% and 0. 025%,respectively,the microstructures are composed of a large amount of lamellar α phases and a small amount of primary α phases,the grain length is 11-18 μm and the width is 4. 40-6. 90 μm.
作者
梁朝阳
张安峰
李丽君
王豫跃
张金智
王宏
I.iang Zhaoyang1, Zhang Anfeng1, Li Lijun2, Wang Yuyue2, Zhang Jinzhi1, Wang Hong1(1.State Key Laboratory for Manufacturing Systems Engineering, Xi＇an Jiaotong University,Xi＇an, Shaanxi 710049, China;2 State Key Laboratory .liar Mechanical Behavior of Materials, Xi＇an Jiaotong University, Xi＇an, Shaanxi 710049, Chin)
出处
《中国激光》
EI
CAS
CSCD
北大核心
2018年第7期47-53,共7页
Chinese Journal of Lasers
基金
国家重点研发计划(2016YFB1100102)
国家自然科学基金(51775417)
陕西省科技统筹创新工程计划(2015KTTSGY03-06)
关键词
激光技术
激光熔覆沉积
晶粒大小
感应加热
变质剂
laser technique
laser cladding deposition
grain size
induction heating
modifier
