Microstructural characteristics of laser surface melted MoSiBTiC alloy

被引：6

作者：

Higashi, Masaya ^{[1
]}

Ozaki, Tomomichi ^{[1
]}

Moronaga, Taku ^{[2
]}

Hara, Toru ^{[2
]}

Osada, Toshio ^{[2
]}

Kawagishi, Kyoko ^{[2
]}

机构：

[1] IHI Corp, Technol & Intelligence Integrat, Isogo Ku, 1 Shinnakahara Cho, Yokohama, Kanagawa 2358501, Japan

[2] Natl Inst Mat Sci, 1-2-1 Sengen, Tsukuba, Ibaraki 3050047, Japan

来源：

MATERIALS LETTERS | 2020年 / 278卷 / 278期

关键词：

Selective laser melting; Mo-Si-B alloy; Lamellar structure; Heat affected zone; Atom probe; Electron microscopy; OXIDATION RESISTANCE; MO;

D O I：

10.1016/j.matlet.2020.128465

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The microstructural characteristics of a TiC-added Mo-Si-B (MoSiBTiC) alloy fabricated by laser surface melting were investigated. The microstructure inside a melt pool consisted of many cells, and each cell was composed of an ultrafine ternary eutectic lamellar structure with Mo solid solution (Mo-ss), Mo5SiB2, and (Mo,Ti)(2)C phases. The lamellar structure completely disappeared in a heat affected zone (HAZ) formed by multi tracks test, and a fine round (Ti,Mo)C phase newly precipitated in the HAZ together with other phases. The chemical composition analyses identified the elemental supersaturation of Si and Ti in the Mo-ss phase and of Ti in the T-2 phase in the lamellar structure. (C) 2020 Elsevier B.V. All rights reserved.

引用

页数：4

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