Material removal and deformation mechanism in multiple nanoscratches of single crystal MgAl2O4

IF 7.6 2区 材料科学 Q1 MATERIALS SCIENCE, MULTIDISCIPLINARY
Jun Zhao , Yeshen Lan , Marian Wiercigroch , Wuqian Li , Shiwei Chen , Oltmann Riemer , Bernhard Karpuschewski
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引用次数: 0

Abstract

Single crystal MgAl2O4 requires ultra-precision machining to achieve dimensional accuracy and surface quality due to its high hardness and brittleness. To investigate the effect of multi-abrasive scratch sequences on the material removal and deformation mechanism of single crystal MgAl2O4 in ultra-precision machining. Multiple nanoscratches experiments with different sequences were conducted to demonstrate the randomness of the scratch sequence occurrence at the abrasive tip in ultra-precision machining. The interactions between multiple nanoscratches with different sequences were analyzed for their effects on the material deformation characteristics and surface morphologies of single crystal MgAl2O4. Additionally, theoretical models for the penetration depth of multiple nanoscratches with different sequences were established. The results show that multiple nanoscratches with different sequences affect the material removal and deformation mechanism of single crystal MgAl2O4, and the predictions of the penetration depth theoretical model align closely with the experimental results. TEM analysis results show that the subsurface deformation mechanism in the ductile removal region during multiple nanoscratches is primarily characterized by the transformation of single crystals into poly-crystalline of nanocrystalline.

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来源期刊
Materials & Design
Materials & Design Engineering-Mechanical Engineering
CiteScore
14.30
自引率
7.10%
发文量
1028
审稿时长
85 days
期刊介绍: Materials and Design is a multi-disciplinary journal that publishes original research reports, review articles, and express communications. The journal focuses on studying the structure and properties of inorganic and organic materials, advancements in synthesis, processing, characterization, and testing, the design of materials and engineering systems, and their applications in technology. It aims to bring together various aspects of materials science, engineering, physics, and chemistry. The journal explores themes ranging from materials to design and aims to reveal the connections between natural and artificial materials, as well as experiment and modeling. Manuscripts submitted to Materials and Design should contain elements of discovery and surprise, as they often contribute new insights into the architecture and function of matter.
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