Elastic recovery effect on vickers microhardness of hard coatings
| Main Author: | Perpustakaan UGM, i-lib |
|---|---|
| Format: | Article NonPeerReviewed |
| Terbitan: |
[Yogyakarta] : Universitas Gadjah Mada
, 1997
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| Subjects: | |
| Online Access: |
https://repository.ugm.ac.id/18657/ http://i-lib.ugm.ac.id/jurnal/download.php?dataId=1454 |
Daftar Isi:
- ABSTRACT It has been commonly assumed that there is no elastic recovery in the Vickers indent diagonal on unloading and Vickers microhardness is load independent. Vickers microhardness measurements on hard coatings on WC-Co substrates were studied as a function of indentation load. The results of this research show that the conventional Vickers hardness increases with decreasing load. It further follows that the large increase in microhardness at light loads (up to 100 g) depends inversely on the elastic modulus of the hard coating. Microhardness numbers based on Vickers diagonal measurements are shown to have varying sensivity to the elastic recovery effect. Depending on the coating thickness, the microhardness load profiles can indicate the existence of gradient residual stresses in the coating as well as effects due to the coating-substrate interface and the substrate hardness.