Co기 합금 구조체 및 그 제조 방법

• Main Authors: OTA ATSUO, IMANO SHINYA
• Format: Patent
• Language: Korean
• Published: 15.09.2021
• Subjects: ALLOYS; CASTING; CHEMISTRY; FERROUS OR NON-FERROUS ALLOYS; MAKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; METALLURGY; PERFORMING OPERATIONS; POWDER METALLURGY; TRANSPORTING; TREATMENT OF ALLOYS OR NON-FERROUS METALS; WORKING METALLIC POWDER

Co기 합금 구조체는, fcc 구조를 갖는 Co 주체의 매트릭스상(γ상)과, 원자비로 Co3(Al, W) 등의 L12 구조를 갖는 fcc 구조의 금속간 화합물을 포함하고, 매트릭스상에 있어서 분산된 상태로 석출되는 석출상(γ'상)을 갖는다. γ'상은, 입경이 10㎚ 내지 1㎛이며, γ'상의 입자가 균일하게 배치되어 석출되어 있으며, 또한 석출량이 40 내지 85체적％로 되도록 구성되어 있다. A Co-based alloy structure includes: a matrix phase (γ phase) having an fcc structure and containing mainly Co; and a precipitated phase (γ' phase) that contains an intermetallic compound having an L12 fcc structure, such as Co3(Al,W) in terms of an atomic ratio, and that is dispersively precipitated in the matrix phase. The Co-based alloy structure is configured to include the γ' phase having a grain size of 10 nm to 1 µm, and grains of the γ' phase uniformly disposed and precipitated, and to have a precipitation amount of 40 vol% to 85 vol%.