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首页> 外文期刊>Journal of Materials Engineering and Performance >Texture and Mechanical Behavior of Zircaloy-2 Rolled at Different Temperatures
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Texture and Mechanical Behavior of Zircaloy-2 Rolled at Different Temperatures

机译：不同温度下轧制的Zircaloy-2的织构和力学行为

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摘要

Zircaloy-2 was deformed by cryorolling (CR) and room-temperature rolling (RTR) with different true strains, and the effects of true strains on microstructural characteristics, texture, and mechanical properties of the alloy were investigated in the current study. The alloy was subjected to rolling at liquid nitrogen temperature and room temperature with the maximum true strain of 1.89 after the initial heat treatment of the alloy at 800 A degrees C in inert atmosphere followed by quenching in mercury. The hardness and tensile properties of the CR, RTR, and annealed alloy upon rolling were systematically measured in rolling and transverse directions. The tensile strengths were found to be 891 and 679 MPa, while hardness values were found to be 282 and 269 VHN for the CR and RTR alloys, in the rolling direction, respectively. Texture results showed the activation of basal slip at higher strains in RTR zircaloy-2. In CR zircaloy-2, only activation of prism slip was observed. Grain refinement, substructures, and texture in the deformed alloy contribute to the improved mechanical properties observed in the current study.
机译：Zircaloy-2通过低温轧制（CR）和室温轧制（RTR）变形而具有不同的真实应变，并且在当前研究中研究了真实应变对合金的显微组织特性，织构和力学性能的影响。合金在惰性气氛中于800 A的温度下进行初始热处理后，在液氮温度和室温下以最大真实应变1.89进行压延，然后在汞中淬火。在轧制和横向方向上系统地测量了CR，RTR和退火合金在轧制时的硬度和拉伸性能。发现在滚动方向上，CR和RTR合金的抗拉强度分别为891和679 MPa，而硬度值分别为282和269 VHN。纹理结果表明，RTR zircaloy-2中较高应变下的基底滑移被激活。在CR zircaloy-2中，仅观察到棱镜滑动的激活。变形合金中的晶粒细化，亚结构和织构有助于改善本研究中观察到的机械性能。

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