Work

Grain Refinement after Various Thermo-Mechanical Treatments in AZ80 and ZK60 Magnesium Alloys

Year: 2012

Type: article

Abstract: The eect of thermal processing prior to severe plastic deformation by extrusion and swaging on grain renement in ZK60 and AZ80 alloys was studied.The alloys received in direct-chill cast condition were homogenized at 415 • C and annealed (over-aged) at temperatures from 200 to 380 • C. Both the direct-hill cast and over-aged conditions were extruded at T = 300 • C using an extrusion ratio of ER = 19.Hot extrusion resulted in substantial grain renement in both cases, the eect being stronger in the over-aged material.The extruded bars were severe plastically deformed at 250 • C by swaging.Swaging rened further the grain size depending on the deformation ratio (number of passes).At optimal processing conditions the grain size was 450 nm and 570 nm for the AZ80 and ZK60 alloys, respectively.

Source: Acta Physica Polonica A

DOI: 10.12693/aphyspola.122.622

Authors: T. Ryspaev, M. Janecek, P. Minárik, V. Wesling, L. Wagner, R. Kral

Institutions: Kyrgyz State Technical University, Charles University, Clausthal University of Technology

Language: English

Topic: Magnesium Alloys: Properties and Applications

Subfield: Biomaterials

Field: Materials Science

Domain: Physical Sciences

Open Access status: diamond

Funders: Deutscher Akademischer Austauschdienst, Grantová Agentura České Republiky

OpenAlex ID: W1001908622

FWCI:

Cites: 10

Cited by: 4

Related to: 10