选择性激光熔化Al-Mn-Sc合金取向诱导力学各向异性的原位EBSD研究

IF 8.6 1区材料科学 Q1 MATERIALS SCIENCE, MULTIDISCIPLINARY

Materials Research Letters Pub Date : 2023-09-13 DOI:10.1080/21663831.2023.2255218

Wei Jiang, Yunlai Deng, Qingsong Dai, Xiaobin Guo

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引用次数: 0

摘要

由于缺乏与晶粒取向相关的力学响应研究，选择性激光熔化(SLM)铝合金由非均质晶粒组织引起的力学各向异性仍未完全了解。本文通过引入原位EBSD拉伸方法，排除晶粒尺寸和晶粒长径比的影响，揭示了与变形诱导晶粒旋转相关的取向诱导各向异性系数Ka。通过Taylor因子M与传统力学性能模型的比较，发现原位取向和热处理取向对屈服强度各向异性的贡献最大，引入Ka能更准确地预测力学各向异性。

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In-situ EBSD investigation of orientation induced mechanical anisotropy in selective laser melted Al-Mn-Sc alloy

The mechanical anisotropy of selective laser melted (SLM) aluminum alloys resulting from heterogeneous grain structures is still not fully understood due to lacking study of grain orientation related mechanical response. Here, by introducing in-situ EBSD tensile method, the orientation induced anisotropy coefficient Ka related to the deformation-induced grain rotation was revealed by excluding effects of grain size and grain aspect ratio. Compared with traditional mechanical properties models by Taylor factor M, it was found that the orientation <001 > in as-built and <102 > in heat treatment contributed the most yield strength anisotropy, and introducing Ka predicts the mechanical anisotropy more accurately.

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来源期刊

Materials Research Letters Materials Science-General Materials Science

CiteScore

12.10

自引率

3.60%

发文量

审稿时长

3.3 months

期刊介绍： Materials Research Letters is a high impact, open access journal that focuses on the engineering and technology of materials, materials physics and chemistry, and novel and emergent materials. It supports the materials research community by publishing original and compelling research work. The journal provides fast communications on cutting-edge materials research findings, with a primary focus on advanced metallic materials and physical metallurgy. It also considers other materials such as intermetallics, ceramics, and nanocomposites. Materials Research Letters publishes papers with significant breakthroughs in materials science, including research on unprecedented mechanical and functional properties, mechanisms for processing and formation of novel microstructures (including nanostructures, heterostructures, and hierarchical structures), and the mechanisms, physics, and chemistry responsible for the observed mechanical and functional behaviors of advanced materials. The journal accepts original research articles, original letters, perspective pieces presenting provocative and visionary opinions and views, and brief overviews of critical issues.