On the effect of elemental partitioning to secondary phases after solution and aging heat treatments in a Co-Ni-based superalloy

Autor:	Jonathan D. Poplawsky, Alex Matos da Silva Costa, M.J. Monteiro, Carlos Angelo Nunes, João Pedro Oliveira, André Paulo Tschiptschin, Camilo A.F. Salvador, Antonio J. Ramirez, J.D. Escobar
Rok vydání:	2022
Předmět:	Superalloy Materials science Mechanics of Materials Phase stability Mechanical Engineering Phase (matter) Metallurgy General Materials Science Grain boundary TERMODINÂMICA Condensed Matter Physics Microstructure Carbide
Zdroj:	Repositório Institucional da USP (Biblioteca Digital da Produção Intelectual) Universidade de São Paulo (USP) instacron:USP
Popis:	In this paper presents the phase stability and elemental partitioning in a Co-40Ni-10Al-7.5W-10Cr-3Nb-0.06B-0.6C (at.%) superalloy (referred to as 3Nb) after two-step heat treatment. The resultant microstructure consisted of γ, γ’, and MC carbide and µ-Co7W6 phase decorating regions near and at grain boundaries. Nb preferentially partitioned to γ’-phase and other elements such as Ni, Cr and W were responsible for the μ-phase formation.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5bf3ce71cef4fd88ad2900d2cd755994 Zobrazit plný text záznamu