Saravanan, M. and Sivaiah, B. and Srivastava, A. K. and Dhar, Ajay (2014) Ultrafine grain structure features in spray-formed AZ31 magnesium alloy. Materials and Design, 60. pp. 21-25. ISSN 0261-3069

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Abstract

The ultrafine grain structure was developed in spray-formed AZ31 magnesium alloy by optimizing delivery tube orifice diameter. A significant refinement of grain size similar to 1 mu m in ultrafine level was achieved by using 2.25 mm delivery tube orifice diameter. The tensile strength value was increased from 145 MPa of as-cast alloy to 250 MPa of spray-formed alloy, registering an enhancement of similar to 72%. On the other hand, elongation was increased from 6% to 13% using 2.25 mm orifice, registering more than onefold increase in elongation. Also, hardness enhancement of similar to 49% was observed in spray-formed AZ31 alloy compared to as-cast alloy. The fracture surface of spray-formed AZ31 Mg alloy evidences the mixed type of ductile and brittle fracture.

Item Type:	Article
Additional Information:	Copyright for this article belongs to M/S Elsevier.
Subjects:	Materials Science
Divisions:	UNSPECIFIED
Depositing User:	Dr. Rajpal Walke
Date Deposited:	23 Nov 2015 10:52
Last Modified:	23 Nov 2015 10:52
URI:	http://npl.csircentral.net/id/eprint/1637

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