Metal matrix composites (MMCs) have been used more and more popularly due to their outstanding performance in strength, wear resistance, low density, and damage resistance^1–3 in many engineering fields^4,5 Many researchers have taken advantages of scratch tests for investigating the material mechanical properties including friction and wear, such as metals,^6,7 ceramics,^8–10 composites,^5,11,12 and coatings.^13,14 Scratching experiments not only evaluate the scratching force, residual depth, and the depth of spring back but also can reveal the mechanisms of material removal, friction, and wear. Ghosh et al.¹⁵ investigated the scratch-induced microplasticity and microcracking in zirconium diboride–silicon carbide composite using a Berkovich nanoindenter. It is found that there are many slip bands in the form of random angles and microcracks perpendicular to the scratching direction in scratching grooves. The results were explained by an elastic stress field based on the Boussinesq and Cerruti-field solutions. Futami et al.¹⁶ have conducted scratching tests using a Berkervich indenter for the particles-reinforced composites with copper contents from 0 vol% to 40 vol%. The results indicated that the scratching induced surface deformation process is comprised of four stages. Habibnejad Korayem et al.¹⁷ have discussed the tribological behavior both magnesium and magnesium alloy reinforced by Al₂O₃ particles. The results indicated that wear rates were reduced with increasing particle contents. The reason is that the reinforced particles have a big load-carrying ability.

中文翻译：

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SiC颗粒增强复合材料在高温下的微划痕特性和变形机理

金属基复合材料（MMC）由于其在强度，耐磨性，低密度和抗损伤性方面的出色表现而得到越来越广泛的应用^1-3在许多工程领域中都是如此[ ^4,5]。材料的机械性能，包括摩擦和磨损，例如金属，^6,7陶瓷，^8-10复合材料，^5,11,12和涂层。^13,14划痕实验不仅可以评估划痕力，残余深度和回弹深度，还可以揭示材料去除，摩擦和磨损的机制。Ghosh等。¹⁵使用Berkovich纳米压痕仪研究了二硼化锆-碳化硅复合材料中由划痕引起的微塑性和微裂纹。发现在刮擦槽中存在许多以随机角度和垂直于刮擦方向的微裂纹形式的滑带。结果由基于Boussinesq和Cerruti场解的弹性应力场解释。Futami等。^16家公司使用Berkervich压头对铜含量为0体积％至40体积％的颗粒增强复合材料进行了划痕测试。结果表明，刮擦引起的表面变形过程包括四个阶段。Habibnejad Korayem等。¹⁷已经讨论了Al ₂ O ₃颗粒增强的镁和镁合金的摩擦学行为。结果表明，磨损率随颗粒含量的增加而降低。原因是增强颗粒具有大的承载能力。