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arXiv 2210.03397cond-mat.mtrl-sciphysics.space-ph
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用于太阳系极端环境的空间任务的抗辐射铝合金

Radiation-resistant aluminium alloy for space missions in the extreme environment of the solar system

Los Alamos National Laboratory(洛斯阿拉莫斯国家实验室);AMAG Rolling GmbH(AMAG轧制有限公司);University of Huddersfield(哈德斯菲尔德大学)

Patrick D. Willenshofer, Matheus A. Tunes, Ho T. Vo, Lukas Stemper, Oliver Renk, Graeme Greaves, Peter J. Uggowitzer, Stefan Pogatscher

AI总结:

本研究提出一种抗辐射铝合金,通过T相实现时效硬化,有效防止位移损伤,适用于下一代空间材料设计。

摘要:

未来人类基于的太阳系探索需要发明能够抵抗恶劣环境的材料。可时效硬化铝合金是长距离航天器结构组件有吸引力的候选者,但其对太阳高能粒子的抗辐射性不足。常见的硬化相在合金基质中溶解并发生位移损伤,这强烈地降解了性能。这里我们提出了一种合金,其中硬化通过T相实现,该相具有巨大的单位细胞和高度负的生成焓。该相显示出记录的辐射存活性,并能在合金中温度和辐射下稳定超细晶结构,从而成功防止位移损伤的发生。这种概念可以被认为是下一代空间材料和抗辐射合金设计的理想选择。

英文摘要:

Future human-based exploration of our solar system requires the invention of materials that can resist harsh environments. Age-hardenable aluminium alloys would be attractive candidates for structural components in long-distance spacecrafts, but their radiation resistance to solar energetic particles is insufficient. Common hardening phases dissolve and displacement damage occurs in the alloy matrix, which strongly degrades properties. Here we present an alloy where hardening is achieved by T-phase, featuring a giant unit cell and highly-negative enthalpy of formation. The phase shows record radiation survivability and can stabilize an ultrafine-grained structure upon temperature and radiation in the alloy, therby successfully preventing displacement damage to occur. Such concept can be considered ideal for the next-generation space materials and the design of radiation resistant alloy.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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