Load-dependence of the measured hardness of Ti(C,N)-based cermets
2001; Elsevier BV; Volume: 303; Issue: 1-2 Linguagem: Inglês
10.1016/s0921-5093(00)01845-1
ISSN1873-4936
AutoresJianghong Gong, Hezhuo Miao, Zhe Zhao, Zhenduo Guan,
Tópico(s)Diamond and Carbon-based Materials Research
ResumoThe Vickers hardnesses of a series of Ti(C,N)-based cermets were measured in the indentation load range from 1.47 to 40.67 N. It was found that the examined materials exhibit a reversed indentation size effect, i.e. the measured hardness increases with increasing indentation load. Both Meyer's law and the energy balance model can not provide a proper description for the observed experimental phenomena, while the polynomial series representation can describe the experimental data very well. A possible explanation for the cause of the observed reverse indentation size effect was also proposed.
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