Microstructure and crystallographic texture of pure titanium parts generated by laser additive manufacturing

被引：8

作者：

Arias-Gonzalez, Felipe ^{[1
]}

del Val, Jesus ^{[1
]}

Comesana, Rafael ^{[2
]}

Penide, Joaquin ^{[1
]}

Lusquinos, Fernando ^{[1
]}

Quintero, Felix ^{[1
]}

Riveiro, Antonio ^{[1
]}

Boutinguiza, Mohamed ^{[1
]}

Javier Gil, Francisco ^{[3
]}

Pou, Juan ^{[1
]}

机构：

[1] Univ Vigo, Dept Appl Phys, EEI, E-36310 Vigo, Spain

[2] Univ Vigo, Dept Mat Engn Appl Mech & Construct, EEI, E-36310 Vigo, Spain

[3] Tech Univ Catalonia UPC, Dept Mat Sci & Met, ETSEIB, E-08028 Barcelona, Spain

来源：

METALS AND MATERIALS INTERNATIONAL | 2018年 / 24卷 / 01期

关键词：

laser cladding; metals; powder processing; epitaxy; electron backscatter diffraction (EBSD); BEAM MELTED TI-6AL-4V; TOOL STEEL POWDERS; POWER DIODE-LASER; MECHANICAL-PROPERTIES; THERMAL-BEHAVIOR; DEPOSITION; FABRICATION; EVOLUTION; BIOCOMPATIBILITY; COMPONENTS;

D O I：

10.1007/s12540-017-7094-x

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

In this paper, the microstructure and crystallographic texture of pure Ti thin walls generated by Additive Manufacturing based on Laser Cladding (AMLC) are analyzed in depth. From the results obtained, it is possible to better understand the AMLC process of pure titanium. The microstructure observed in the samples consists of large elongated columnar prior beta grains which have grown epitaxially from the substrate to the top, in parallel to the building direction. Within the prior beta grains, alpha-Ti lamellae and lamellar colonies are the result of cooling from above the beta-transus temperature. This transformation follows the Burgers relationship and the result is a basket-weave microstructure with a strong crystallographic texture. Finally, a thermal treatment is proposed to transform the microstructure of the as-deposited samples into an equiaxed microstructure of alpha-Ti grains.

引用

页码：231 / 239

页数：9

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