논문 상세보기

기계적 합금화에 의한 합금분말의 제조, 열간 성형, 이차재결정화 및 기계적 성질 평가에 관한 연구 KCI 등재

A Study of Production, Hot Consolidation, Secondary Recrystallization and Mechnical Property Assesment of Mechanically Alloyed

  • 언어KOR
  • URLhttps://db.koreascholar.com/Article/Detail/2094
구독 기관 인증 시 무료 이용이 가능합니다. 4,000원
한국분말야금학회지 (Journal of Korean Powder Metallurgy Institute)
한국분말재료학회(구 한국분말야금학회) (Korean Powder Metallurgy Institute)
초록

Ni(Fe)Al powders containing a homogeneous distribution of the in-situ formed AIN and dispersoids have been produced by mechanical alloying process in a controlled atmosphere using high energy attrition mill. The powders have been successfully consolidated by hot extrusion process. The phase information investigated by TEM and XRD analysis reveals that Fe can be soluble up to 20% to the NiAl phase () at room temperature after MA process. Subsequent thermomechanical treatment under specific condition has been tried to induce secondary recrystallization (SRx) to improve high temperature properties, however, the clear evidence of SRx was not obtained in this material. Mechanical properties in term of strength at room temperature as well as at high temperatures have been improved by the addition pf AIN, and the room temperature ductility has been shown to be improved after heat treatment, presumably due to the precipitation of second phase of in this material.

저자
  • 이순철