Electron beam melting of boron-modified Ti-6Al-2Sn-4Zr-2Mo-0.1Si alloy with superior tensile strength and oxidation resistance at elevated temperatures

被引：22

作者：

Fujieda, Tadashi ^{[1
]}

Cui, Yujie ^{[2
]}

Aoyagi, Kenta ^{[2
]}

Koizumi, Yuichiro ^{[2
]}

Chiba, Akihiko ^{[2
]}

机构：

[1] Res & Dev Grp Hitachi Ltd, Ctr Technol Innovat Mat, Hitachi, Ibaraki 3191292, Japan

[2] Tohoku Univ, Inst Mat Res, Sendai, Miyagi 9808577, Japan

来源：

MATERIALIA | 2018年 / 4卷

关键词：

Ti alloy; TiB; Electron beam melting (EBM); Mechanical properties; Oxidation resistance;

D O I：

10.1016/j.mtla.2018.10.013

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The effectiveness of applying an electron beam melting (EBM) additive manufacturing process to Ti-6Al-2Sn-4Zr-2Mo-0.1Si-1B alloy by comparing the EBM alloy with a corresponding wrought alloy was demonstrated. The EBM alloys exhibited microstructures that had much finer whisker-like TiB precipitates with nanometer width dispersed more uniformly than those of the wrought alloy formed due to the rapid solidification process. The EBM alloys had higher tensile strength than the wrought alloy at elevated temperatures up to 873 K. Furthermore, the oxidation resistance at 1073 K of the EBM alloys was significantly improved because of the dense oxide film formation.

引用

页码：367 / 372

页数：6

共 14 条

[1] AN ADVANCED ALLOY FOR ELEVATED-TEMPERATURES [J].

BANIA, PJ .

JOURNAL OF METALS, 1988, 40 (03) :20-22

[2] Effect of Boron on the Elevated-Temperature Tensile and Creep Behavior of Cast Ti-6Al-2Sn-4Zr-2Mo-0.1Si (Weight Percent) [J].

Chen, W. ;

Boehlert, C. J. .

METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE, 2009, 40A (07) :1568-1578

[3]

Gerold V., 1966, PHYS STATUS SOLIDI B, V16

[4] The effect of defects on the mechanical response of Ti-6Al-4V cubic lattice structures fabricated by electron beam melting [J].

Hernandez-Nava, E. ;

Smith, C. J. ;

Derguti, F. ;

Tammas-Williams, S. ;

Leonard, F. ;

Withers, P. J. ;

Todd, I. ;

Goodall, R. .

ACTA MATERIALIA, 2016, 108 :279-292

[5] Fabrication and microstructural characterisation of additive manufactured Ti-6Al-4V parts by electron beam melting This paper reports that the microstructure and micro-hardness of an EMB part is thickness dependent [J].

Kok, Yihong ;

Tan, Xipeng ;

Tor, Shu Beng ;

Chua, Chee Kai .

VIRTUAL AND PHYSICAL PROTOTYPING, 2015, 10 (01) :13-21

[6] The microstructural characterization and simulation of titanium alloys modified with boron [J].

Lieberman, S. I. ;

Singh, H. ;

Mao, Y. ;

Sreeranganathan, A. ;

Gokhale, A. M. ;

Tamirisakandala, S. ;

Miracle, D. B. .

JOM, 2007, 59 (01) :59-63

[7] Effect of Hypoeutectic Boron Additions on the Grain Size and Mechanical Properties of Ti-6Al-4V Manufactured with Powder Bed Electron Beam Additive Manufacturing [J].

Mahbooba, Zaynab ;

West, Harvey ;

Harrysson, Ola ;

Wojcieszynski, Andrzej ;

Dehoff, Ryan ;

Nandwana, Peeyush ;

Horn, Timothy .

JOM, 2017, 69 (03) :472-478

[8] Location specific solidification microstructure control in electron beam melting of Ti-6Al-4V [J].

Narra, Sneha P. ;

Cunningham, Ross ;

Beuth, Jack ;

Rollett, Anthony D. .

ADDITIVE MANUFACTURING, 2018, 19 :160-166

[9] A new high-temperature, oxidation-resistant in situ TiB and TiC reinforced Ti6242 alloy [J].

Qin, Yexia ;

Zhang, Di ;

Lu, Weihe ;

Pan, Wei .

JOURNAL OF ALLOYS AND COMPOUNDS, 2008, 455 (1-2) :369-375

[10] Effect of boron on the beta transus of Ti-6Al-4V alloy [J].

Tamirisakandala, S ;

Bhat, RB ;

Miracle, DB ;

Boddapati, S ;

Bordia, R ;

Vanover, R ;

Vasudevan, VK .

SCRIPTA MATERIALIA, 2005, 53 (02) :217-222

← 1 2 →