Influence of Parameters on Macro/micro-structure of TC11 Alloy by Laser Direct Deposition

被引：0
|
作者：
Gong Xinyong [1 ]
Liu Mingkun [1 ]
Liu Yantao [1 ]
Zhang Yongzhong [1 ]
机构：
[1] Ctr Composites, Gen Res Inst Nonferrous Met, Beijing 100088, Peoples R China
来源：
MECHANICAL ENGINEERING, MATERIALS AND ENERGY II | 2013年 / 281卷
关键词：
Laser direct deposition; Process parameters; Macro/micro-structure; Properties;
D O I：
10.4028/www.scientific.net/AMM.281.496
中图分类号：
TU [建筑科学];
学科分类号：
0813 ;
摘要：
Understanding the effect of process parameters on microstructure is crucial to control or optimize microstructure for laser direct deposition process. Four thin-wall samples of TC11 titanium alloy are deposited with different process parameters. They showed different macro/micro-structure and mechanical properties. The reason is analyzed by temperature field of samples which are simulated by ANSYS software. Results show that, deposition with low laser power and slow scanning speed is conducive to reducing molten pool temperature and soaking time in beta-phase region, refining original beta grain and improving the plastic properties of the deposited parts. Deposition with high laser power and rapid scanning speed, combined with interlayer stay, is helpful to increase the cooling rate within alpha+beta phase region, refine intragranular alpha lamellar and improve the tensile strength of deposited parts.
引用
收藏
页码：496 / 499
页数：4
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