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Zr—2.5Nb 合金具有良好的物化性能和工艺性能,因此成为制作水冷动力堆各种构件必不可少的材料。但是,这种合金在反应堆中吸氢,并且由于氢化物的析出而发生氢脆,这就限制了它的使用寿命,并使反应堆的最高运转温度限制在350—400℃之间。要提高反应堆的热效率,就必须探索能改善合金高温性能的合金元素;Ni、V、Ti 这些合金元素可能是潜在的重要元素,因为已知这些元素能提高锆的强度。但是,它们对氢在 Zr—2.5Nb 合金中固溶度的影响问题,现在尚不清楚。印度铸锻造工学院材料科学系的 V、K.辛纳(Sinha)通过测定在800～900℃范围内平衡氢气压—成份曲线,探讨了 Ni、V、Ti 对氢在(Zr—2.5Nb)—H_2系合金β-
Zr-2.5Nb alloy has good physical and chemical properties and process performance, it has become an indispensable material for the production of various components of water-cooled power plants. However, this alloy absorbs hydrogen in the reactor and hydrogen embrittlement occurs due to the precipitation of hydride, which limits its useful life and limits the maximum operating temperature of the reactor to between 350 and 400 ° C. To increase the thermal efficiency of the reactor, alloying elements that improve the high-temperature properties of the alloy must be explored; alloying elements such as Ni, V, Ti may be potentially important elements since these elements are known to increase the strength of zirconium. However, the effect of hydrogen on the solubility of hydrogen in Zr-2.5Nb alloys is not yet clear. V, K. Sinha, Department of Materials Science, Indian Institute of Foundry & Foundry Technology, Beijing This paper discussed the effect of Ni, V and Ti on the hydrogen equilibrium in (Zr-2.5Nb) -H 2 system alloy β-