Fabrication of Ti3Al-Based Intermetallic Alloy by Laser Powder Bed Fusion Using a Powder Mixture

被引：1

作者：

Li, Kuanhe ^{[1
,4
]}

Wang, Xianglong ^{[2
,3
,4
]}

Chen, Haishao ^{[5
]}

Huang, Xiaoxiao ^{[5
]}

Zhu, Guanglin ^{[1
]}

Tu, Ganfeng ^{[1
]}

机构：

[1] Northeastern Univ, Sch Met, Shenyang 110819, Peoples R China

[2] China Machinery Inst Adv Mat Co Ltd, Zhengzhou 450001, Peoples R China

[3] China Acad Machinery Sci & Technol, State Key Lab Adv Forming Technol & Equipment, Beijing 100083, Peoples R China

[4] McGill Univ, Min & Mat Engn, 3610 Univ St, Montreal, PQ H3A 0C5, Canada

[5] Wenzhou Univ Technol, Sch Intelligent Mfg & Elect Engn, Wenzhou 325025, Peoples R China

来源：

MATERIALS | 2023年 / 16卷 / 07期

关键词：

laser powder bed fusion; additive manufacturing; Ti3Al alloy; intermetallic alloy; MECHANICAL-PROPERTIES; TENSILE PROPERTIES; HEAT-TREATMENT; ALPHA-PHASE; TIAL ALLOYS; MICROSTRUCTURE; BETA; EVOLUTION; TI-48AL-2CR-2NB; DEFORMATION;

D O I：

10.3390/ma16072699

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Due to their light weight and outstanding mechanical properties at high temperatures, Ti3Al-based intermetallic alloys have driven increasing interest from both academia and industry; however, when additive manufacturing (AM) is applied to them, the outcome is hardly satisfying. In this work, we report a crack-free Ti3Al-based alloy fabrication by laser powder bed fusion (LPBF) using a mixture of a commercial Ti-48Al-2Cr-2Nb powder and a pure Ti powder. With the aid of a high cooling rate during LPBF, the as-built sample shows a ductile beta phase with some partially-melted particles. After the heat treatment, partially-melted particles were dissolved, and the sample showed equiaxed alpha(2) precipitates in the beta matrix. The hardness was 515 +/- 38 HV in the as-built sample and 475 +/- 37 HV in the heat-treated sample. This study shows a novel strategy to fabricate crack-free Ti3Al-based alloy using LPBF from powder blends.

引用

页数：16

共 58 条

[1] CONTINUOUS GROWTH-MODEL FOR INTERFACE MOTION DURING ALLOY SOLIDIFICATION [J].

AZIZ, MJ ;

KAPLAN, T .

ACTA METALLURGICA, 1988, 36 (08) :2335-2347

[2] Additive Manufacturing of -TiAl: Processing, Microstructure, and Properties [J].

Balla, Vamsi Krishna ;

Das, Mitun ;

Mohammad, Ashfaq ;

Al-Ahmari, Abdulrahman M. .

ADVANCED ENGINEERING MATERIALS, 2016, 18 (07) :1208-1215

[3] Alloy design via additive manufacturing: Advantages, challenges, applications and perspectives [J].

Bandyopadhyay, Amit ;

Traxel, Kellen D. ;

Lang, Melanie ;

Juhasz, Michael ;

Eliaz, Noam ;

Bose, Susmita .

MATERIALS TODAY, 2022, 52 :207-224

[4] The role of crystallographic and geometrical relationships between α and β phases in an α/β titanium alloy [J].

Bhattacharyya, D ;

Viswanathan, GB ;

Denkenberger, R ;

Furrer, D ;

Fraser, HL .

ACTA MATERIALIA, 2003, 51 (16) :4679-4691

[5] Microstructure of additive layer manufactured Ti-6Al-4V after exceptional post heat treatments [J].

Brandl, Erhard ;

Greitemeier, Daniel .

MATERIALS LETTERS, 2012, 81 :84-87

[6] Effect of α morphology on the diffusional β ⇆ α transformation in Ti-55531 during continuous heating: Dissection by dilatometer test, microstructure observation and calculation [J].

Chen, Fu-Wen ;

Xu, Guanglong ;

Zhang, Xiao-Yong ;

Zhou, Ke-Chao ;

Cui, Yuwen .

JOURNAL OF ALLOYS AND COMPOUNDS, 2017, 702 :352-365

[7] The effect of annealing on microstructure and tensile properties of Ti-22Al-25Nb electron beam weld joint [J].

Chen, W. ;

Chen, Z. Y. ;

Wu, C. C. ;

Li, J. W. ;

Tang, Z. Y. ;

Wang, Q. J. .

INTERMETALLICS, 2016, 75 :8-14

[8]

Chen W., 2019, Addit. Manuf. Aerosp. Ind, P235

[9]

Chen X., 2018, Fabrication and characterization of advanced materials using laser metal deposition from elemental powder mixture

[10] A Review on Metallic Alloys Fabrication Using Elemental Powder Blends by Laser Powder Directed Energy Deposition Process [J].

Chen, Yitao ;

Zhang, Xinchang ;

Parvez, Mohammad Masud ;

Liou, Frank .

MATERIALS, 2020, 13 (16)

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