Role of tantalum concentration on the high dose self-ion irradiation behavior of nanocrystalline binary alloys
Role of tantalum concentration on the high dose self-ion irradiation behavior of nanocrystalline binary alloys
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DOI：
10.1016/j.scriptamat.2022.115100
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发表时间：
2023-01
影响因子：
6
通讯作者：
S. Srinivasan;B. Hornbuckle;M. Chancey;K. Darling;Y.Q. Wang;K. Solanki
中科院分区：
文献类型：
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作者：
S. Srinivasan;B. Hornbuckle;M. Chancey;K. Darling;Y.Q. Wang;K. Solanki
本工作研究了纳米晶铜钽合金的自离子辐照行为。特别是在4 MeV铜离子注量为2×10~(17)ion/cm~2的条件下，研究了不同温度下Cu-3at.%Ta和Cu-10at.%Ta的微观结构演化。结果表明，尽管Cu-10Ta有能力重新析出新的纳米团簇，从而使∼密度增加了17%，但它经历了显著的微观结构演变。另一方面，在相同的条件下，Cu-3Ta表现出相对稳定的微结构响应和3.5倍的小膨胀。这一结果说明了在极端环境中，辐照和形变可以耦合以稳定/恢复Ta纳米团簇的前提。
In this work, the self-ion irradiation behavior of nanocrystalline copper-tantalum alloys was investigated. In particular, the microstructural evolution of Cu-3at.%Ta and Cu-10at.%Ta was evaluated under the fluence of 2 × 1017ions/cm2of 4 MeV Cu-ions at different temperatures. Results revealed that despite the ability of Cu-10Ta to reprecipitate new nanoclusters and thereby increase the sink density by ∼17%, it undergoes significant microstructural evolution. On the other hand, Cu-3Ta exhibits a relatively more stable microstructural response and 3.5 times less swelling over the same conditions. This result illustrates the premise that irradiation and deformation may be coupled to stabilize/rejuvenate Ta-nanoclusters in extreme-environments.