Microstructure and Properties of Magnetic Field Assisted Laser Deposition Repaired BT20 Alloy

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	Microstructure and Properties of Magnetic Field Assisted Laser Deposition Repaired BT20 Alloy
	Qin Lanyun; Yang Guang; Bian Hongyou; Wang Wei; Ren Yuhang; Liu Qi
刊名	RARE METAL MATERIALS AND ENGINEERING
	2015
卷号	44 期号:5 页码:1277-1280
关键词	titanium alloy magnetic field laser deposition repair microstructure
ISSN号	1002-185X
其他题名	Microstructure and Properties of Magnetic Field Assisted Laser Deposition Repaired BT20 Alloy
英文摘要	To improve the laser deposition repair quality of BT20 titanium alloy, a magnetic field device was designed and introduced to the laser repair system. The effects of magnetic field intensity on the macro morphologies, microstructures and micro-hardness of the laser repaired zone were studied. The results show that there is a dense metallurgical bond between the repaired zone and the substrate under the magnetic field, and flat surface can be gained with few powders. And also, the repaired zone is composed of prior b grain with alpha/beta lamellae in it. With the increasing of magnetic field, the a lamellae length declines and its thickness is 0.4 similar to 0.5 mu m. The micro-hardness of the repaired zone improves with the increasing of magnetic field intensity, but it tends to be homogenization in certain parameters. It indicates that rotating magnetic field reduces enrichment of solute, and then decreases beta ->alpha phase transformation driving force. Hence, a lamellae precipitation needs high degree of supercooling, which lead to a higher nucleation rate, resulting in finer microstructures and improved mechanical property.
语种	英语
CSCD记录号	CSCD:5418944
内容类型	期刊论文
源URL	[http://ir.imr.ac.cn/handle/321006/149434]
专题	金属研究所_中国科学院金属研究所
作者单位	中国科学院金属研究所
推荐引用方式 GB/T 7714	Qin Lanyun,Yang Guang,Bian Hongyou,et al. Microstructure and Properties of Magnetic Field Assisted Laser Deposition Repaired BT20 Alloy[J]. RARE METAL MATERIALS AND ENGINEERING,2015,44(5):1277-1280.
APA	Qin Lanyun,Yang Guang,Bian Hongyou,Wang Wei,Ren Yuhang,&Liu Qi.(2015).Microstructure and Properties of Magnetic Field Assisted Laser Deposition Repaired BT20 Alloy.RARE METAL MATERIALS AND ENGINEERING,44(5),1277-1280.
MLA	Qin Lanyun,et al."Microstructure and Properties of Magnetic Field Assisted Laser Deposition Repaired BT20 Alloy".RARE METAL MATERIALS AND ENGINEERING 44.5(2015):1277-1280.