발간논문

Home > KJMM 논문 > 발간논문

Vol.32, No.9, 1036 ~ 1042, 1994
Title
The Effect of Surface - Recrystallization on Creep Properties in a Directionally Solidified Nickel -- Base Superalloy
이도인 , 허보녕 , 이종훈 , 김학민 Do In Lee , Bo Young Hur , Jong Hoon Lee , Hag Min Kim
Abstract
Recrystaltization at the surface of specimen was observed during heat treatment due to lathe machining or shot peening. In order to investigate the effect of surface recrystallization on creep properties, creep test was conducted at 1050℃ under a stress of 123MPa. Creep rupture lives were compared among DS specimen without surface recrystallized layer, specimens with surface recrystallized layer of 80∼100㎛ and 160-180㎛. Creep rupture time of DS specimen without surface recrystallized layer was longer than DS specimen with surface recrystallized layer (160-180㎛), which was reduced more than the specimen with surface recrystallized layer(80-100㎛). Microcracks were formed around γ´ denuded zone.
Key Words
| PDF
대한금속∙재료학회 │ (06633) 서울시 서초구 서초대로 56길 38 대한금속∙재료학회 회관 (서초1동 1666-12번지)
Tel : 070-4266-1646 │ FAX : 02-557-1080 │ E-mail : metal@kim.or.kr
Copyright ⓒ 2013 사단법인 대한금속∙재료학회 All rights reserved.