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Nanoindentation of shock deformed alumina

IR@CGCRI: CSIR-Central Glass and Ceramic Research Institute, Kolkata


Field	Value

Title	Nanoindentation of shock deformed alumina

Creator	Mukhopadhyay, Anoop Kumar Joshi, Keshaw D. Dey, Arjun Chakraborty, Riya Rav, Amit Mandal, Ashok Kumar Ghosh, Jiten Bysakh, Sandip Biswas, Sampad Kumar Gupta, Satish C

Subject	Engineering Materials

Description	In the current study, the experimental results on the nanoindentation response of both as prepared and shock recovered alumina of 10 mu m grain size and identical processing history are presented and analyzed. The shock recovery experiments were deliberately conducted with gas gun arrangements at shock pressures much above the Hugoniot Elastic Limit (HEL) of alumina. The nanoindentation experiments were conducted at 10-1000 mN load with a Berkovich indenter. The nanohardness and Young's modulus value of shock recovered alumina were always lower than those of the as prepared alumina samples. Subsequently, the detailed characterizations of the shock recovered alumina samples by X-ray diffraction, scanning electron microscopy (SEM), field emission scanning electron microscopy (FE-SEM) and transmission electron microscopy (TEM) were utilized to understand the reasons behind the drop in nanohardness and Young's modulus of shock recovered alumina samples. (C) 2010 Elsevier B.V. All rights reserved.

Publisher	Elsevier

Date	2010-09

Type	Article PeerReviewed

Format	application/pdf

Identifier	http://cgcri.csircentral.net/818/1/anoop2'10.pdf Mukhopadhyay, Anoop Kumar and Joshi, Keshaw D. and Dey, Arjun and Chakraborty, Riya and Rav, Amit and Mandal, Ashok Kumar and Ghosh, Jiten and Bysakh, Sandip and Biswas, Sampad Kumar and Gupta, Satish C (2010) Nanoindentation of shock deformed alumina. Materials Science and Engineering A-Structural Materials Properties Microstructure and Processing, 527 (24-25). pp. 6478-6483. ISSN 0921-5093

Relation	http://cgcri.csircentral.net/818/