中国激光, 2018, 45 (7): 0702001, 网络出版: 2018-09-11
感应加热辅助变质剂硼细化激光熔覆沉积TC4晶粒的研究 下载: 908次
Induction Heating Assisted Modifier Boron Refining of TC4 Grains by Laser Cladding Deposition
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
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11~18 μm,宽度为4.40~6.90 μm。
Abstract
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.
梁朝阳, 张安峰, 李丽君, 王豫跃, 张金智, 王宏. 感应加热辅助变质剂硼细化激光熔覆沉积TC4晶粒的研究[J]. 中国激光, 2018, 45(7): 0702001. Zhaoyang Liang, Anfeng Zhang, Lijun Li, Yuyue Wang, Jinzhi Zhang, Hong Wang. Induction Heating Assisted Modifier Boron Refining of TC4 Grains by Laser Cladding Deposition[J]. Chinese Journal of Lasers, 2018, 45(7): 0702001.