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Research Papers
가시화 기반 Varestraint 시험을 이용한 CM247LC 초내열합금 용접 열영향부의 액화균열 민감도 평가 및 제어
정예선1 · 김경민1 · 이형수2 · 서성문2 · 천은준1,3,*

Received 2021 Mar 22     Accepted 2021 Apr 9     Published online 2021 Jun 11
Abstract
The metallurgical aspects of weld cracking in Ni-based superalloys remain relatively unexplored in existing research. The present study performed comprehensive metallurgical and manufactural investigations into the weldability of an Ni-based superalloy, CM247LC, from the viewpoint of the liquation cracking behavior and its susceptibility. Metallurgical solutions to suppress the liquation-cracking susceptibility were derived via the... More
      
나노구조의 ZrB2-SiC 복합재료 합성과 소결
손인진*

Received 2021 Apr 2     Accepted 2021 Apr 8     Published online 2021 Jun 11
Abstract
ZrB2 is considered a candidate material for ultra-high temperature ceramics because of its high thermal conductivity, high melting point, and low coefficient of thermal expansion. Despite these attractive properties, applications of ZrB2 are limited by its low fracture toughness below the brittle-ductile transition temperature. To improve its ductile properties, the approach universally utilized... More
      
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