Fabrication and Characterization of Magnesium-Based WE43/TiC Nanocomposite Material Developed via Friction Stir Processing and Study of Significant Parameters

IF 1.5 4区 材料科学 Q3 ENGINEERING, MECHANICAL
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引用次数: 0

Abstract

Magnesium Metal Matrix Composites (MMMCs) have exceptional mechanical and metallurgical characteristics, which has drawn the interest of researchers across the world. In the present research study, an attempt has been made to fabricate WE43 magnesium (Mg) based nanocomposites using Friction stir processing (FSP) after incorporating nano-Titanium carbide(TiC) as a reinforcement. Further, the impact of different FSP variables such as transverse speeds (40 mm/min and 80 mm/min), and tool rotation speeds (900 rpm and 1800rpm) over the metallurgical, wear, and mechanical performance has been studied. The large thermal energy generated by the rotating FSP tool gives rise to the mechanism of dynamic recrystallization and plastic deformation. This contributes to refining the microstructure and improvement in microhardness as per Hall–Patch relation- contributing to prominent grain size refinement and Orowan mechanism strengthening, due to the dispersion of reinforcement particulates. The outcome of the results depicts that the nanocomposite fabricated at a tool rotation speed of 1800 rpm and 80 mm/min transverse shows better mechanical and tribological characteristics than other developed composites and the base alloy. More specifically, the grain size was reduced nearly 12 times, microhardness was 2.58 times higher, and ultimate tensile strength (UTS) was 2.08 times higher when contrasted to the base alloy. Moreover, the un-processed base material was characterized by an adhesive wear mechanism whereas the presence of scratches depicts the abrasive wear mechanism was dominant for WE43/TiC nanocomposite.
搅拌摩擦法制备镁基WE43/TiC纳米复合材料及其重要参数研究
镁金属基复合材料(MMMC)具有优异的力学和冶金特性,引起了世界各地研究人员的兴趣。在本研究中,在掺入纳米碳化钛(TiC)作为增强材料后,尝试使用摩擦搅拌处理(FSP)制备WE43镁基纳米复合材料。此外,还研究了不同FSP变量,如横向速度(40mm/min和80mm/min)和刀具转速(900rpm和1800rpm)对冶金、磨损和机械性能的影响。旋转FSP刀具产生的巨大热能产生了动态再结晶和塑性变形的机制。根据霍尔-帕奇关系,这有助于细化微观结构和提高显微硬度——由于增强颗粒的分散,有助于显著的晶粒细化和奥罗万机制强化。结果表明,在1800rpm和80mm/min横向工具转速下制备的纳米复合材料比其他开发的复合材料和基础合金显示出更好的机械和摩擦学特性。更具体地说,与基体合金相比,晶粒尺寸减小了近12倍,显微硬度提高了2.58倍,极限抗拉强度(UTS)提高了2.08倍。此外,未加工的基体材料的特征是粘附磨损机制,而划痕的存在表明WE43/TiC纳米复合材料的磨损机制占主导地位。
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来源期刊
CiteScore
3.00
自引率
0.00%
发文量
30
审稿时长
4.5 months
期刊介绍: Multiscale characterization, modeling, and experiments; High-temperature creep, fatigue, and fracture; Elastic-plastic behavior; Environmental effects on material response, constitutive relations, materials processing, and microstructure mechanical property relationships
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