An optomechanogram: co-registered microstructural and micromechanical properties of the cervix

Author(s):  
Amir Ostadi Moghaddam
1981 ◽  
Vol 42 (C5) ◽  
pp. C5-1129-C5-1134
Author(s):  
S. Etienne ◽  
J. Y. Cavaille ◽  
J. Perez ◽  
M. Salvia

Coatings ◽  
2021 ◽  
Vol 11 (3) ◽  
pp. 266
Author(s):  
M.S.I. Chowdhury ◽  
B. Bose ◽  
S. Rawal ◽  
G.S. Fox-Rabinovich ◽  
S.C. Veldhuis

Tool wear phenomena during the machining of titanium alloys are very complex. Severe adhesive interaction at the tool chip interface, especially at low cutting speeds, leads to intensive Built Up Edge (BUE) formation. Additionally, a high cutting temperature causes rapid wear in the carbide inserts due to the low thermal conductivity of titanium alloys. The current research studies the effect of AlTiN and CrN PVD coatings deposited on cutting tools during the rough turning of a Ti6Al4V alloy with severe BUE formation. Tool wear characteristics were evaluated in detail using a Scanning Electron Microscope (SEM) and volumetric wear measurements. Chip morphology analysis was conducted to assess the in situ tribological performance of the coatings. A high temperature–heavy load tribometer that mimics machining conditions was used to analyze the frictional behavior of the coatings. The micromechanical properties of the coatings were also investigated to gain a better understanding of the coating performance. It was demonstrated that the CrN coating possess unique micromechanical properties and tribological adaptive characteristics that minimize BUE formation and significantly improve tool performance during the machining of the Ti6Al4V alloy.


2001 ◽  
Vol 167 (1) ◽  
pp. 227-242 ◽  
Author(s):  
Igor Luzinov ◽  
Daungrut Julthongpiput ◽  
Paul D. Bloom ◽  
Valerie V. Sheares ◽  
Vladimir V. Tsukruk

2004 ◽  
Vol 41 (5) ◽  
pp. 703-716 ◽  
Author(s):  
Michal Józwik ◽  
Christophe Gorecki ◽  
Andrei Sabac ◽  
Patrick Delobelle ◽  
Małgorzata Kujawińska

2012 ◽  
Vol 358 (6-7) ◽  
pp. 1032-1037 ◽  
Author(s):  
Simon Striepe ◽  
Ning Da ◽  
Joachim Deubener ◽  
Lothar Wondraczek

2014 ◽  
Vol 895 ◽  
pp. 567-570
Author(s):  
Azman Jalar ◽  
Wan Yusmawati Wan Yusoff ◽  
Norinsan Kamil Othman ◽  
Irman Abdul Rahman

Effect of gamma radiation (1.33 MeV) and high temperature storage of semiconductor package towards micromechanical properties has been investigated. The in-house fabricated Quad Flat No Lead was exposed to gamma radiation with the dose of 5 Gy. Afterwards, high temperature storage was performed at 150 °C for 10, 100 and 1000 hours. Subsequently, the three point bending technique was carried out to obtain the micromechanical properties of semiconductor package. The fracture of the packages caused by three point bending test was subjected to 3D CT scan to capture the image of the fracture. Irradiated package shows the decreasing in their strength with increasing doses of gamma radiation. However, the strength of the package was improved after high temperature storage for 10 hours and decreased as the storage period is extended. Further analysis exhibited that high temperature storage for 10 hours is reveal as good thermal treatment for package in radioactive environment application.


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