Defect, Microstructure, and Mechanical Property of Ti-6Al-4V Alloy Fabricated by High-Power Selective Laser Melting

被引：121

作者：

Cao, Sheng ^{[1
,3
]}

Chen, Zhuoer ^{[1
,2
]}

Lim, Chao Voon Samuel ^{[1
]}

Yang, Kun ^{[1
,3
]}

Jia, Qingbo ^{[1
,3
]}

Jarvis, Tom ^{[1
,3
]}

Tomus, Dacian ^{[4
]}

Wu, Xinhua ^{[1
,3
]}

机构：

[1] Monash Ctr Addit Mfg, Notting Hill, Vic 3168, Australia

[2] Monash Univ, Dept Mech & Aerosp Engn, Clayton, Vic 3800, Australia

[3] Monash Univ, Dept Mat Sci & Engn, Clayton, Vic 3800, Australia

[4] Amaero Engn, Notting Hill, Vic 3168, Australia

来源：

JOM | 2017年 / 69卷 / 12期

关键词：

BEHAVIOR; EVOLUTION; MODE;

D O I：

10.1007/s11837-017-2581-6

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

To improve the selective laser melting (SLM) productivity, a high laser power and accordingly adjusted parameters are employed to facilitate a high build rate. Three distinct processing strategies with incremental build rate are developed for SLM Ti-6Al-4V. Various types of defects are investigated. Further studies were carried out by heat-treatment and hot isostatic pressing to evaluate the influence of microstructure and porosity on mechanical properties. The anisotropic mechanical property in horizontally and vertically build samples were observed, which was attributable to the columnar grains and spatial arrangement of defects. Regardless of anisotropy, a post-SLM heat-treatment at 800A degrees C for 2 h produces a combined high strength and ductility.

引用

页码：2684 / 2692

页数：9

共 32 条

[1]

[Anonymous], 2017, ASTM B96217 STANDARD

[2]

[Anonymous], 2011, E8E8M11 ASTM

[3]

[Anonymous], 2014, Standard Specification for General Requirements for Rolled Structural Steel Bars, Plates, Shapes, and Sheet Piling, DOI DOI 10.1520/F2924

[4] On the limitations of Volumetric Energy Density as a design parameter for Selective Laser Melting [J].

Bertoli, Umberto Scipioni ;

Wolfer, Alexander J. ;

Matthews, Manyalibo J. ;

Delplanque, Jean-Pierre R. ;

Schoenung, Julie M. .

MATERIALS & DESIGN, 2017, 113 :331-340

[5] Ductility of a Ti-6Al-4V alloy produced by selective laser melting of prealloyed powders [J].

Facchini, Luca ;

Magalini, Emanuele ;

Robotti, Pierfrancesco ;

Molinari, Alberto ;

Hoeges, Simon ;

Wissenbach, Konrad .

RAPID PROTOTYPING JOURNAL, 2010, 16 (06) :450-459

[6] Densification behavior, microstructure evolution, and wear performance of selective laser melting processed commercially pure titanium [J].

Gu, Dongdong ;

Hagedorn, Yves-Christian ;

Meiners, Wilhelm ;

Meng, Guangbin ;

Batista, Rui Joao Santos ;

Wissenbach, Konrad ;

Poprawe, Reinhart .

ACTA MATERIALIA, 2012, 60 (09) :3849-3860

[7] Optimization of the EDM parameters on machining Ti-6Al-4V with multiple quality characteristics [J].

Kao, J. Y. ;

Tsao, C. C. ;

Wang, S. S. ;

Hsu, C. Y. .

INTERNATIONAL JOURNAL OF ADVANCED MANUFACTURING TECHNOLOGY, 2010, 47 (1-4) :395-402

[8] Laser powder-bed fusion additive manufacturing: Physics of complex melt flow and formation mechanisms of pores, spatter, and denudation zones [J].

Khairallah, Saad A. ;

Anderson, Andrew T. ;

Rubenchik, Alexander ;

King, Wayne E. .

ACTA MATERIALIA, 2016, 108 :36-45

[9] Laser powder bed fusion additive manufacturing of metals; physics, computational, and materials challenges [J].

King, W. E. ;

Anderson, A. T. ;

Ferencz, R. M. ;

Hodge, N. E. ;

Kamath, C. ;

Khairallah, S. A. ;

Rubenchik, A. M. .

APPLIED PHYSICS REVIEWS, 2015, 2 (04)

[10] Observation of keyhole-mode laser melting in laser powder-bed fusion additive manufacturing [J].

King, Wayne E. ;

Barth, Holly D. ;

Castillo, Victor M. ;

Gallegos, Gilbert F. ;

Gibbs, John W. ;

Hahn, Douglas E. ;

Kamath, Chandrika ;

Rubenchik, Alexander M. .

JOURNAL OF MATERIALS PROCESSING TECHNOLOGY, 2014, 214 (12) :2915-2925

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