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Influence of high pressure torsion on microstructure evolution and mechanical properties of AZ80/SiC magnesium matrix composites

The result's identifiers

  • Result code in IS VaVaI

    <a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F21%3A10437287" target="_blank" >RIV/00216208:11320/21:10437287 - isvavai.cz</a>

  • Result on the web

    <a href="https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=Iwsi.MWgb8" target="_blank" >https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=Iwsi.MWgb8</a>

  • DOI - Digital Object Identifier

    <a href="http://dx.doi.org/10.1016/j.msea.2021.141916" target="_blank" >10.1016/j.msea.2021.141916</a>

Alternative languages

  • Result language

    angličtina

  • Original language name

    Influence of high pressure torsion on microstructure evolution and mechanical properties of AZ80/SiC magnesium matrix composites

  • Original language description

    The effect of applying 1, 5 and 10 turns of high pressure torsion (HPT) as a severe plastic deformation technique on the microstructural evolution, hardness, tensile and shear strength of an as-cast AZ80-SiC magnesium matrix composite is investigated in the present study. The results show that HPT at room temperature refines the microstructure of the as-cast material having an average grain size of 176 +/- 58.9 mu m to a fine grain structure with average grain sizes of 4.2 +/- 4.1 mu m and 2.5 +/- 2.1 mu m in 5 and 10 turns HPT samples, respectively. In addition, ultra-fine grained regions (grain size &lt;1 mu m) with volume fractions of about 12, 27 and 31 vol% are obtained in the samples processed by 1, 5 and 10 turns of HPT, respectively. Based on microstructural observations, it is concluded that 5 and 10 turns HPT samples are almost similar in terms of grain size, recrystallized fraction, low-angle grain boundary fraction, and recovered parts. The ultimate tensile and shear (achieved from shear punch tests) strengths of the as-cast sample are improved by applying HPT due to grain size and texture hardening mechanisms. The highest strength values are obtained after performing the first HPT turn due to the more significant effect of texture hardening in comparison to the 5 and 10 turns HPT-processed samples. Similar to the strength results, the hardness of the as-cast material is also enhanced from 66 +/- 6 HV to about 123 +/- 3 HV through HPT processing.

  • Czech name

  • Czech description

Classification

  • Type

    J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database

  • CEP classification

  • OECD FORD branch

    10302 - Condensed matter physics (including formerly solid state physics, supercond.)

Result continuities

  • Project

  • Continuities

    I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Others

  • Publication year

    2021

  • Confidentiality

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

Data specific for result type

  • Name of the periodical

    Materials Science &amp; Engineering A: Structural Materials: Properties, Microstructure and Processing

  • ISSN

    0921-5093

  • e-ISSN

  • Volume of the periodical

    826

  • Issue of the periodical within the volume

    08

  • Country of publishing house

    CH - SWITZERLAND

  • Number of pages

    11

  • Pages from-to

    141916

  • UT code for WoS article

    000696950800001

  • EID of the result in the Scopus database

    2-s2.0-85113302270