Fabrication of La₂O₃ dispersed Mo-Si-B alloys and its mechanical properties

Choi, Won June; Park, Chun Woong; Park, Jung Hyo; Byun, Jong Min; Kim, Young Do

doi:10.7449/2019/MST_2019_1194_1201

상세 보기

Fabrication of La₂O₃ dispersed Mo-Si-B alloys and its mechanical properties

Choi, Won June;
Park, Chun Woong;
Park, Jung Hyo;
Byun, Jong Min;
Kim, Young Do

Citations

SCOPUS

0

초록

Refractory metal has been spotlighted as one of the next-generation high-temperature materials. Among the refractory metal, molybdenum (Mo) has a possibility to substitute for high-temperature materials in use currently due to its high melting point. Especially, Mo-Si-B alloys which are added silicon and boron have more potential because of its superior mechanical properties and improved oxidation resistance at elevated temperature. In addition, there are several attempts to add a 4th element in Mo-Si-B alloys recently. In this study, we introduce the La₂O₃ dispersed Mo-Si-B alloys and its mechanical properties. The Mo-Si-B-La₂O₃ alloys were fabricated by powder metallurgy and chemical reaction process. Its microstructure and distribution of oxide particle was observed by SEM and TEM analysis. Fracture toughness was measured by 3-point bending test and its fracture surface was observed by SEM.

키워드

Core-shell powder; Fracture toughness; La2O3 particle; Mo-Si-B alloys; Fabrication; Fracture toughness; High temperature effects; Lanthanum alloys; Lanthanum oxides; Oxidation resistance; Powder metallurgy; Powder metals; Refractory metals; Silicon alloys; Ternary alloys; Chemical reaction process; Core shell; Elevated temperature; Fracture surfaces; High melting point; High temperature materials; Mo-Si-B alloys; Oxide particles; Molybdenum alloys

제목: Fabrication of La₂O₃ dispersed Mo-Si-B alloys and its mechanical properties

저자: Choi, Won June; Park, Chun Woong; Park, Jung Hyo; Byun, Jong Min; Kim, Young Do

DOI: 10.7449/2019/MST_2019_1194_1201

발행일: 2019-10

유형: Conference Paper

저널명: MS and T 2019 - Materials Science and Technology 2019

페이지: 1194 ~ 1201