Production of high strength Mg97Zn1Y2 alloy by using mechanically alloyed MgH2 powder

Mitsuhiro Matsuda; Yoshihito Kawamura; Minoru Nishida

doi:10.2320/matertrans.44.440

Production of high strength Mg₉₇Zn₁Y₂ alloy by using mechanically alloyed MgH₂ powder

Mitsuhiro Matsuda, Yoshihito Kawamura, Minoru Nishida

Research output: Contribution to journal › Article › peer-review

3 Citations (Scopus)

Abstract

The Mg₉₇Zn₁Y₂ bulk alloy has been produced by MA-HDH P/M process using MgH₂ powders as the starting material. As-extruded Mg₉₇Zn₁Y₂ bulk alloy of MAed powders showed a high compressive yield strength of 616 MPa and a plastic strain of 4.2%. These values were much higher than those of commercial ingot metallurgy (I/M) Mg alloys, such as AZ91 and ZK60. This is originated from the refinement of hcp-Mg grains, the solid solution hardening of Zn and Y, and the dispersion hardening by MgO and Y₂O₃ fine particles. No degradation was observed in mechanical properties of the alloy even after annealing at 673 K for prolonging time. This is considered to be due to the inhibition of the hcp-Mg grain growth by the densely dispersed MgO and Y₂O₃ fine particles. Therefore, MA-HDH P/M Mg₉₇Zn₁ Y₂ alloy is promising as the structural material for high temperature applications.

Original language	English
Pages (from-to)	440-444
Number of pages	5
Journal	Materials Transactions
Volume	44
Issue number	4
DOIs	https://doi.org/10.2320/matertrans.44.440
Publication status	Published - Apr 2003
Externally published	Yes

All Science Journal Classification (ASJC) codes

Materials Science(all)
Condensed Matter Physics
Mechanics of Materials
Mechanical Engineering

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10.2320/matertrans.44.440

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abstract = "The Mg97Zn1Y2 bulk alloy has been produced by MA-HDH P/M process using MgH2 powders as the starting material. As-extruded Mg97Zn1Y2 bulk alloy of MAed powders showed a high compressive yield strength of 616 MPa and a plastic strain of 4.2%. These values were much higher than those of commercial ingot metallurgy (I/M) Mg alloys, such as AZ91 and ZK60. This is originated from the refinement of hcp-Mg grains, the solid solution hardening of Zn and Y, and the dispersion hardening by MgO and Y2O3 fine particles. No degradation was observed in mechanical properties of the alloy even after annealing at 673 K for prolonging time. This is considered to be due to the inhibition of the hcp-Mg grain growth by the densely dispersed MgO and Y2O3 fine particles. Therefore, MA-HDH P/M Mg97Zn1 Y2 alloy is promising as the structural material for high temperature applications.",

author = "Mitsuhiro Matsuda and Yoshihito Kawamura and Minoru Nishida",

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AU - Matsuda, Mitsuhiro

AU - Kawamura, Yoshihito

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N2 - The Mg97Zn1Y2 bulk alloy has been produced by MA-HDH P/M process using MgH2 powders as the starting material. As-extruded Mg97Zn1Y2 bulk alloy of MAed powders showed a high compressive yield strength of 616 MPa and a plastic strain of 4.2%. These values were much higher than those of commercial ingot metallurgy (I/M) Mg alloys, such as AZ91 and ZK60. This is originated from the refinement of hcp-Mg grains, the solid solution hardening of Zn and Y, and the dispersion hardening by MgO and Y2O3 fine particles. No degradation was observed in mechanical properties of the alloy even after annealing at 673 K for prolonging time. This is considered to be due to the inhibition of the hcp-Mg grain growth by the densely dispersed MgO and Y2O3 fine particles. Therefore, MA-HDH P/M Mg97Zn1 Y2 alloy is promising as the structural material for high temperature applications.

AB - The Mg97Zn1Y2 bulk alloy has been produced by MA-HDH P/M process using MgH2 powders as the starting material. As-extruded Mg97Zn1Y2 bulk alloy of MAed powders showed a high compressive yield strength of 616 MPa and a plastic strain of 4.2%. These values were much higher than those of commercial ingot metallurgy (I/M) Mg alloys, such as AZ91 and ZK60. This is originated from the refinement of hcp-Mg grains, the solid solution hardening of Zn and Y, and the dispersion hardening by MgO and Y2O3 fine particles. No degradation was observed in mechanical properties of the alloy even after annealing at 673 K for prolonging time. This is considered to be due to the inhibition of the hcp-Mg grain growth by the densely dispersed MgO and Y2O3 fine particles. Therefore, MA-HDH P/M Mg97Zn1 Y2 alloy is promising as the structural material for high temperature applications.

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Production of high strength Mg₉₇Zn₁Y₂ alloy by using mechanically alloyed MgH₂ powder

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