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수소함유량에 따른 Zr-1.0Nb 합금 피복관의 기계적 물성치 변화
나연수 ( Yeon Soo Na ),최민영 ( Min Young Choi ),고대균 ( Dae Gyun Ko ),김윤호 ( Yoon Ho Kim ),목용균 ( Yong Kyoon Mok ) 대한금속재료학회(구 대한금속학회) 2016 대한금속·재료학회지 Vol.54 No.3
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.