大电流脉冲电子束诱导的 aa1933 铝合金表层残余应力和变形机制

IF 0.5 Q4 PHYSICS, NUCLEAR

Problems of Atomic Science and Technology Pub Date : 2024-04-11 DOI:10.46813/2024-150-034

V. Bryukhovetsky, V. Lytvynenko, D. E. Myla, V.V. Shatov, A. G. Ponomarev, O.L. Rak, V. Bychko

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引用次数: 0

摘要

本研究的目的是发现并证明用大电流脉冲电子束辐照熔化的 AA1933 铝合金表层的快速凝固会导致该表层产生变形过程。这是脉冲电子束辐照铝合金过程中产生的热弹性内应力造成的。辐照-熔化层中的残余内应力值为 43 兆帕。由于无法通过直接方法确定重熔层冷却过程中的变形机制，因此通过研究辐照表面的浮雕来得出变形机制的结论。这项研究表明，AA1933 铝合金在辐照过程中的变形过程会在辐照表面的不同部位以不同的机理发生。变形可通过位错滑移和晶界滑移两种机制进行。

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RESIDUA STRESSES AND DEFORMATION MECHANISMS IN THE SURFACE LAYER OF AA1933 ALUMINUM ALLOY INDUCED BY HIGH-CURRENT PULSED ELECTRON BEAM

The purpose of the present study was to find out and show that rapid solidification of the surface layer of AA1933 aluminum alloy melted by irradiation with a high-current pulsed electron beam leads to the development of deformation processes in this layer. This results from thermo-elastic internal stresses arising during irradiation of the alloy with a pulsed electron beam. The value of residual internal stresses in the irradiation-remelted layer is 43 MPa. Since it is impossible to determine the deformation mechanisms during cooling of the remelted layer by direct methods, conclusions about the deformation mechanisms were made by studying the relief of the irradiated surface. This study shows that deformation processes during irradiation of AA1933 aluminum alloy can develop in different parts of the irradiated surface by different mechanisms. Deformation can be carried out by both dislocation slip and grain-boundary slipping mechanisms.

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来源期刊

Problems of Atomic Science and Technology 物理-核科学技术

CiteScore

0.70

自引率

50.00%

发文量

审稿时长

2-4 weeks

期刊介绍： The journal covers the following topics: Physics of Radiation Effects and Radiation Materials Science; Nuclear Physics Investigations; Plasma Physics; Vacuum, Pure Materials and Superconductors; Plasma Electronics and New Methods of Acceleration.