Influence of high-pressure torsion on microstructure, hardness and shear strength of AM60 magnesium alloy

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61389005%3A_____%2F21%3A00540444" target="_blank" >RIV/61389005:_____/21:00540444 - isvavai.cz</a>

Alternative codes found

RIV/00216208:11320/21:10437540

Result on the web

<a href="https://doi.org/10.1016/j.msea.2020.140158" target="_blank" >https://doi.org/10.1016/j.msea.2020.140158</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.msea.2020.140158" target="_blank" >10.1016/j.msea.2020.140158</a>

Result language

angličtina

Original language name

Influence of high-pressure torsion on microstructure, hardness and shear strength of AM60 magnesium alloy

Original language description

The evolution of the microstructure, crystallographic texture and hardness of an AM60 magnesium alloy was studied in the center and the edge parts of disks processed by high-pressure torsion (HPT) technique at room temperature. In addition, the mechanical properties were also tested by shear punch test (SPT). The number of HPT turns varied between ½ and 10. It was found that the grain size of the initial extruded material (∼16 μm) decreased to ∼2 and ∼0.8 μm at the disk center and edge, respectively, even after ½ turn of HPT. Ten turns of HPT resulted in further grain refinement to ∼1 and ∼0.23 μm at the disk center and edge, respectively. The dislocation density saturated even after ½ turn with the value of ∼11 × 1014 m−2. The maximum value of the hardness was ∼1300 MPa that was measured at the edge of the disk deformed for ½ turn. Despite the practically unchanged grain size and dislocation density, the hardness decreased between 3 and 10 turns which can be explained by texture softening. A good agreement was observed between the yield strength estimated as one-third of the hardness and the values calculated from the dislocation density, grain size and texture. The difference between the microstructure and hardness obtained for AM60 samples processed by HPT and equal channel angular pressing (ECAP) is discussed.

Czech name

—

Czech description

—

Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

—

OECD FORD branch

20501 - Materials engineering

Project

<a href="/en/project/EF16_013%2F0001794" target="_blank" >EF16_013/0001794: European Spallation Source - participation of the Czech Republic - OP</a><br>

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2021

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Materials Science and Engineering A Structural Materials Properties Microstructure and Processing

ISSN

0921-5093

e-ISSN

1873-4936

Volume of the periodical

799

Issue of the periodical within the volume

JAN

Country of publishing house

CH - SWITZERLAND

Number of pages

12

Pages from-to

140158

UT code for WoS article

000626533700002

EID of the result in the Scopus database

2-s2.0-85090200263