Microstructure and Mechanical Properties of SiC + Fe + Mn + Sn Hybrid Reinforced Surface Composites Fabricated by Friction Stir Processing: Effect of Double Pass

IF 3.3 3区材料科学 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY Metals and Materials International Pub Date : 2024-05-20 DOI:10.1007/s12540-024-01697-7

Pooja Dwivedi, Sachin Maheshwari, Arshad Noor Siddiquee

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Abstract

The primary objective of this research work is to analyse the effect of double pass on grain refinement during friction stir processing (FSP). The impact of double pass was also assessed on the microstructure, micro-hardness, and tensile strength of the hybrid reinforced aluminum alloy. Field emission scanning microscopy with energy dispersive spectroscopic analysis was used to analyze the grain size distribution as well as the percentage of elements present across the stir zone (SZ) and mode of fracture during the tensile testing. Results show a notable increase in mechanical properties and a huge reduction in grain size when compared to base material (BM). The grain size of SZ in single pass FSP (FSPed-SP) and double pass FSP (FSPed-DP) was reduced to 76.71% and 91.8% in comparison to the BM because repetitive stirring action causes huge dynamic recrystallization. However, peak micro-hardness in FSPed-DP and FSPed-SP was achieved as 30.58% and 22.79% of the BM due to the hall–petch effect. FSPed-DP demonstrated superior ultimate tensile strength and percentage of elongation in contrast to FSPed-SP, which exhibited values of 29.03% and 25% respectively.

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摩擦搅拌工艺制造的 SiC + Fe + Mn + Sn 混合增强表面复合材料的微观结构和力学性能：双程工艺的影响

这项研究工作的主要目的是分析在搅拌摩擦加工（FSP）过程中双程对晶粒细化的影响。此外，还评估了双道次对混合强化铝合金的微观结构、微观硬度和拉伸强度的影响。现场发射扫描显微镜与能量色散光谱分析被用来分析晶粒尺寸分布以及整个搅拌区（SZ）的元素百分比和拉伸测试中的断裂模式。结果表明，与基础材料（BM）相比，机械性能显著提高，晶粒尺寸大幅减小。由于重复搅拌会导致大量的动态再结晶，因此单程 FSP（FSPed-SP）和双程 FSP（FSPed-DP）中 SZ 的晶粒尺寸分别比 BM 减小了 76.71% 和 91.8%。然而，由于霍尔萃取效应，FSPed-DP 和 FSPed-SP 的峰值微硬度分别为 BM 的 30.58% 和 22.79%。与 FSPed-SP 相比，FSPed-DP 的极限拉伸强度和伸长率分别为 29.03% 和 25%。

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来源期刊

Metals and Materials International 工程技术-材料科学：综合

CiteScore

7.10

自引率

8.60%

发文量

197

审稿时长

3.7 months

期刊介绍： Metals and Materials International publishes original papers and occasional critical reviews on all aspects of research and technology in materials engineering: physical metallurgy, materials science, and processing of metals and other materials. Emphasis is placed on those aspects of the science of materials that are concerned with the relationships among the processing, structure and properties (mechanical, chemical, electrical, electrochemical, magnetic and optical) of materials. Aspects of processing include the melting, casting, and fabrication with the thermodynamics, kinetics and modeling.