Successful additive manufacturing of MoSi2 including crystallographic texture and shape control

被引：41

作者：

Hagihara, Koji ^{[1
,2
]}

Nakano, Takayoshi ^{[2
,3
]}

Suzuki, Masahiro ^{[3
]}

Ishimoto, Takuya ^{[2
,3
]}

Suyalatu ^{[2
,3
]}

Sun, Shi-Hai ^{[2
,3
]}

机构：

[1] Osaka Univ, Grad Sch Engn, Dept Adapt Machine Syst, 2-1 Yamadaoka, Suita, Osaka 5650871, Japan

[2] Osaka Univ, Anisotrop Design & AM Res Ctr, 2-1 Yamadaoka, Suita, Osaka 5650871, Japan

[3] Osaka Univ, Grad Sch Engn, Div Mat & Mfg Sci, 2-1 Yamadaoka, Suita, Osaka 5650871, Japan

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 2017年 / 696卷

关键词：

Transition metal alloys and compounds; Laser processing; Selective laser melting (SLM); Texture; Electron backscattering diffraction (EBSD); SINGLE-CRYSTALS; MOLYBDENUM DISILICIDE; MECHANICAL-PROPERTIES; DEFORMATION BEHAVIOR; PLASTIC-DEFORMATION; CREEP-DEFORMATION; DUPLEX CRYSTALS; MICROSTRUCTURE; LAMELLAE; IN738LC;

D O I：

10.1016/j.jallcom.2016.11.191

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：

MoSi2 is one of the promising candidates for ultrahigh-temperature structural materials. However, its product fabrication has been limited owing to its significant brittleness until now. As an approach to overcome this, we have first successfully fabricated MoSi2 samples via additive manufacturing (AM). Control of the thermal expansion coefficient of the start plate for AM is important for building a three-dimensional MoSi2 product with a low deformability. Moreover, unidirectional laser scanning is found to be significantly effective for controlling the crystallographic texture in MoSi2 with a low crystal symmetry. By the unidirectional scanning, [001] texture could be developed along the scanning direction, which possibly results in the fabrication of the MoSi2 products with better high-temperature strength. (C) 2016 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY license.

引用

页码：67 / 72

页数：6

共 30 条

[1] Effect of build geometry on the β-grain structure and texture in additive manufacture of Ti-6Al-4V by selective electron beam melting [J].