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논문 기본 정보

자료유형
학술저널
저자정보
Zhiping Guo (Nanjing University of Science and Technology) Ran Liu (North China University of Technology) Chuan Ting Wang (Nanjing University of Science and Technology) Yong He (Nanjing University of Science and Technology) Yuan He (Nanjing University of Science and Technology) Yue Ma (Nanjing University of Science and Technology) Xuebing Hu (Nanjing University of Science and Technology)
저널정보
대한금속·재료학회 Metals and Materials International Metals and Materials International Vol.26 No.10
발행연도
2020.1
수록면
1,498 - 1,505 (8page)

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초록· 키워드

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The compressive mechanical properties of a Ti–29Nb–13Ta–4.6Zr alloy were investigated at room temperature under variousstrain rates. The parameters of a modified Johnson–Cook constitutive equation were determined to describe the strainsoftening behavior under dynamic conditions. The testing results under compression show yield strength evidently increaseswith the increase of the strain rate. Moreover, it was found that the strain-rate effect of the yield strength upon dynamicdeformation is more significant than that upon quasi-static deformation. In order to characterize the impact-initiated reactionbehavior of Ti–29Nb–13Ta–4.6Zr alloy, the quasi-sealed test chamber was used to measure the pressure caused by energyreleased of fragments. It was obviously shown that the exothermic chemical reaction was more intense with the increase ofimpact velocity.

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