4.7 Article

Effects of secondary phases on texture and mechanical properties of as-extruded Mg-Zn-Er alloys

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出版社

ELSEVIER SCIENCE BV
DOI: 10.1016/S1003-6326(18)64722-3

关键词

Mg-Zn-Er alloy; dynamic recrystallization; texture; tensile properties

资金

  1. National Natural Science Foundation of China [51401005]
  2. Beijing Natural Science Foundation, China [2172013, 2164055]
  3. National Key Research and Development Program, China [2016YFB0301101-1]
  4. TiXin Talents Plan of Beijing University of Technology, China [2015-RX-L11]

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The effects of kinds of secondary phases on texture and mechanical properties of Mg-Zn-Er alloys were investigated. The results suggest that the I-phase has a great effect on modification of the texture via the discontinuous dynamic recrystallization mechanism (DDRX), which tends to form well-developed equiaxed recrystallized grams Meanwhile, the W-phase plays an important role in refining the gram size via continuous dynamic recrystallization (CDRX), companied with a higher maximum texture intensity. Thus, the Mg-6Zn-1Er alloy containing I-phase shows a performance of higher elongation of 20.4% The Mg-2Zn-2Er alloy including W-phase displays a better tensile strength, and the yield strength (YS) is about 247 MPa.

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