Microstructural Investigation and Impact Testing of Additive Manufactured TI-6AL-4V

被引：11

作者：

Austin, D. C. ^{[1
]}

Bevan, M. A. ^{[1
]}

East, D. ^{[2
]}

Brown, A. D. ^{[1
]}

Ameri, A. A. H. ^{[1
]}

Hazell, P. J. ^{[1
]}

Chen, A. ^{[3
]}

Chan, S. L. I. ^{[3
]}

Quadir, M. Z. ^{[4
]}

Escobedo, J. P. ^{[1
]}

机构：

[1] UNSW Australia, Australian Def Force Acad, Sch Engn & Informat Technol, Canberra, ACT 2600, Australia

[2] Commonwealth Sci & Ind Res Org, Clayton, Vic 3168, Australia

[3] UNSW Australia, Sch Mat Sci, Sydney, NSW 2052, Australia

[4] Curtin Univ, JdLC, MMF, Perth, WA 6102, Australia

来源：

CHARACTERIZATION OF MINERALS, METALS, AND MATERIALS 2017 | 2017年

关键词：

Titanium; Porosity; Compression; Tension; Additive manufacture; ALLOYS;

D O I：

10.1007/978-3-319-51382-9_21

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

The microstructure and mechanical response of additive manufactured Ti64 under compression and tension has been investigated. Quasi-static and dynamic experiments were conducted on electron beam powder bed Arcam A1 (EBM) and blown powder laser Optomec LENS MR-7 (LMD) additive manufactured specimens. Hot isostatic pressing (HIP) was conducted on both of the additive manufactured specimens and results were compared with as-received specimens. Digital image correlation (DIC) was utilized to observe the in situ development of deformation fields during tensile loading. Optical microscopy was conducted on pristine and deformed specimens to examine the microstructure of the specimens. HIP treatment reduced the porosity by similar to 90% with a concomitant increase in hardness by 40%. The results from tensile experiments show that additive manufactured Ti64 display a higher values for the yield stress, hardness, and ultimate tensile strength than conventionally manufactured Ti64. Under quasi-static compression, it was observed that EBM specimens exhibit a higher yield strength and ultimate tensile strength than LMD specimens.

引用

页码：191 / 199

页数：9

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