Microstructure and tensile properties of laser melting deposited Ti-5Al-5Mo-5V-1Cr-1Fe near β titanium alloy

被引：129

作者：

Liu, C. M. ^{[1
]}

Wang, H. M. ^{[1
,2
]}

Tian, X. J. ^{[1
,2
]}

Tang, H. B. ^{[1
,2
]}

Liu, D. ^{[1
,2
]}

机构：

[1] Beihang Univ, Lab Laser Mat Proc & Mfg, Beijing 100191, Peoples R China

[2] Beihang Univ, Minist Educ, Key Lab Aerosp Mat, Beijing 100191, Peoples R China

来源：

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 2013年 / 586卷

关键词：

Laser melting deposition; Titanium alloy; Microstructure; Grain boundary; Tensile property; MECHANICAL-PROPERTIES; EVOLUTION; BEHAVIOR; MANUFACTURE; KINETICS; BUILDS; PHASE;

D O I：

10.1016/j.msea.2013.08.032

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

A near p titanium alloy Ti-5Al-5Mo-5V-1Cr-1Fe is fabricated by laser melting deposition (LMD). The evolution of its macrostructure and microstructure during LMD process are systematically studied. Then the relationship between the microstructure and tensile properties is further investigated. The macrostructure exhibits unique bamboo-like beta grain morphology, which forms during the solidification and remelt treatment during the LMD process. The microstructures exhibit fine basketweave microstructure and continuous grain boundary alpha (alpha(GB)), whose formation is associated with the complex thermal cycling treatment. Interestingly, an unique fork-like alpha is observed but gradually disappears during the evolution process of microstructure. The underlying mechanism is proposed. Besides, tensile tests show that the fine microstructure results in high strength, and the continuous aGB causes the low ductility and intergranular fracture. Meanwhile, the cracks are prone to propagate along the interface between the columnar and equiaxed regions. (C) 2013 Elsevier B.V. All rights reserved.

引用

页码：323 / 329

页数：7

共 32 条

[11] The laser additive manufacture of Ti-6Al-4V
Kobryn, PA
Semiatin, SL
[J]. JOM-JOURNAL OF THE MINERALS METALS & MATERIALS SOCIETY, 2001, 53 (09): : 40 - 42
[12] Aging response of laser melting deposited Ti-6Al-2Zr-1Mo-1V alloy
Li, J.
Wang, H. M.
[J]. MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2013, 560 : 193 - 199
[13] Microstructure and mechanical properties of rapid directionally solidified Ni-base superalloy Rene'41 by laser melting deposition manufacturing
Li, J.
Wang, H. M.
[J]. MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2010, 527 (18-19): : 4823 - 4829
[14] THE KINETICS OF PRECIPITATION FROM SUPERSATURATED SOLID SOLUTIONS
LIFSHITZ, IM
SLYOZOV, VV
[J]. JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS, 1961, 19 (1-2) : 35 - 50
[15] Solidification behavior and the evolution of phase in laser rapid forming of graded Ti6Al4V-Rene88DT alloy
Lin, X.
Yue, T. M.
Yang, H. O.
Huang, W. D.
[J]. METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE, 2007, 38A (01): : 127 - 137
[16] Microstructural characterization of laser melting deposited Ti-5Al-5Mo-5V-1Cr-1Fe near β titanium alloy
Liu, C. M.
Tian, X. J.
Tang, H. B.
Wang, H. M.
[J]. JOURNAL OF ALLOYS AND COMPOUNDS, 2013, 572 : 17 - 24
[17] Microstructure and tensile properties of laser melting deposited TiC/TA15 titanium matrix composites
Liu, D.
Zhang, S. Q.
Li, A.
Wang, H. M.
[J]. JOURNAL OF ALLOYS AND COMPOUNDS, 2009, 485 (1-2) : 156 - 162
[18] The effect of laser scanning path on microstructures and mechanical properties of laser solid formed nickel-base superalloy Inconel 718
Liu, Fencheng
Lin, Xin
Huang, Chunping
Song, Menghua
Yang, Gaolin
Chen, Jing
Huang, Weidong
[J]. JOURNAL OF ALLOYS AND COMPOUNDS, 2011, 509 (13) : 4505 - 4509
[19] Microstructure evolution of sub-critical annealed laser deposited Ti-6Al-4V alloy
Lu, Y.
Tang, H. B.
Fang, Y. L.
Liu, D.
Wang, H. M.
[J]. MATERIALS & DESIGN, 2012, 37 : 56 - 63
[20] Moiseyev V.N., 2006, TITANIUM ALLOYS RUSS, P75

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