PDF(Pubmed)
Abstract：
The study of metals and alloys containing helium has garnered significant attention within the nuclear energy community. However, there is limited research on the mechanical behavior of bulk alloys implanted with helium. This study investigates the mechanical properties of several Al-Boron alloys implanted with helium using controlled manipulation of helium doses via boron content under a consistent neutron dose. Results show that HemVn may contribute to strength by approximately 8.4-15 MPa and 16.8-23 MPa for helium doses 3.08 × 1019/cm3 and 6.84 × 1019/cm3, respectively, while lattice damages due to neutron-aluminum reaction contribute to strength by 24∼27 MPa. Subsequent annealing leads to the formation of helium bubbles, resulting in a slightly higher strengthening effect compared to HemVn. Additionally, the work hardening behavior of the alloys can be explained by the Voce model, drawing inspiration from the resemblance between helium bubbles and nanoprecipitates in 7xxx alloys. These findings provide insights to the nuclear energy community.
摘要：
含有氦的金属和合金的研究在核能界引起了极大的关注。然而,对注入氦气的块状合金的力学行为研究有限。这项研究研究了在一致的中子剂量下，通过硼含量控制氦气剂量，研究了几种注入氦气的Al-硼合金的机械性能。结果表明，对于氦剂量3.08×1019/cm3和6.84×1019/cm3，HemVn可能分别为强度贡献约8.4-15MPa和16.8-23MPa，而中子-铝反应引起的晶格损伤对强度的贡献为24~27兆帕。随后的退火导致氦气泡的形成，导致与HemVn相比略高的强化效果。此外,合金的加工硬化行为可以用Voce模型来解释，从7xxx合金中氦气泡和纳米沉淀物之间的相似性中汲取灵感。这些发现为核能界提供了见解。
