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Critique of materials‐based models of ductile machining in brittle solids
Journal of the American Ceramic Society ( IF 3.9 ) Pub Date : 2020-07-07 , DOI: 10.1111/jace.17344
Han Huang 1 , Brian R. Lawn 2 , Robert F. Cook 2 , David B. Marshall 3
Affiliation  

Indentation fracture models of ductile machining in hard and brittle materials are critically appraised. Relations obtained in a seminal study for critical depths of cut below which fracture is suppressed are examined and amended. Limitations inherent in any such materials-based analysis, in addition to uncertainties in empirical measurements of underpinning mechanical properties (modulus, hardness, toughness) and of threshold grinding depths, suggest that caution should be exercised in unconditional usage. Notwithstanding these limitations, the value of the indentation fracture methodology in placing ductile machining on a sound materials science footing is maintained.

中文翻译:

对脆性固体中延性加工的基于材料的模型的批判

对硬脆材料中韧性加工的压痕断裂模型进行了严格评价。检查和修正在临界切削深度的开创性研究中获得的关系,低于该深度的断裂被抑制。除了支撑机械性能(模量、硬度、韧性)和阈值研磨深度的经验测量的不确定性之外,任何此类基于材料的分析中固有的局限性表明,在无条件使用时应谨慎行事。尽管有这些限制,压痕断裂方法在将延性加工置于合理的材料科学基础上的价值得到了保留。
更新日期:2020-07-07
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