수소함유량에 따른 Zr-1.0Nb 합금 피복관의 기계적 물성치 변화

• Published in: 대한금속·재료학회지, 54(3) Vol. 54; no. 3; pp. 224 - 230
• Main Authors: 나연수, Yeon Soo Na, 최민영, Min Young Choi, 고대균, Dae Gyun Ko, 김윤호, Yoon Ho Kim, 목용균, Yong Kyoon Mok
• Format: Journal Article
• Language: Korean
• Published: 대한금속재료학회 05.03.2016; 대한금속·재료학회
• Subjects: cladding; ductility; hydride; mechanical properties; tensile test; Zr-1.0Nb based alloys; 재료공학
• ISSN: 1738-8228; 2288-8241
• DOI: 10.3365/KJMM.2016.54.3.224

Hydrogen pre-charged Zr-1.0Nb alloy was prepared to study the effect of hydrogen uptake on its mechanical properties. The apparent activation energy of the Zr-1.0Nb alloy for hydriding was about 27 kcal/mol. The tensile strength of the Zr-1.0Nb alloy with a hydrogen content of up to 700 ppm was similar to that of an as-fabricated specimen, in that its elongation was drastically decreased after 400 ppm and became nearly zero above about 1200 ppm. The critical hydrogen content range needed to produce the ductile-brittle transition was above 400 ppm.