Change in mechanical properties during crystallization of amorphous Mg83Ni9Y8

Pablo Pérez; Gerardo Garcés; Sergio Gonzalez Sanchez; Heiko Nitsche; Ferdinand Sommer; Paloma Adeva

doi:10.1016/j.msea.2005.11.083

Change in mechanical properties during crystallization of amorphous Mg83Ni9Y8

Pablo Pérez, Gerardo Garcés, Sergio Gonzalez Sanchez, Heiko Nitsche, Ferdinand Sommer, Paloma Adeva

Mechanical and Construction Engineering

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

7 Citations (Scopus)

Abstract

The different phase transformations occurring in rapidly solidified amorphous ribbons of the Mg83Ni9Y8 (at.%) alloy during heating have been determined. Such transformations involve atomic rearrangement in the amorphous material leading to a first metastable state of extremely fine nanocrystals in the amorphous matrix. Further transformations result in the formation of Mg, Mg2Ni, and an unidentified phase. Heating at temperatures above that of primary crystallization causes additional formation of Mg24Y5 and Ni2Y3 phases. Microhardness measurements were used to evaluate the mechanical properties at room temperature of the structures appearing after each phase transformation. The fine grain size of the crystallized material is the main contribution to harden significantly the totally crystallized alloy. The solid solution of nickel and yttrium in magnesium as well as Mg24Y5 precipitation induce some additional strengthening.

Original language	English
Pages (from-to)	211-214
Journal	Materials Science and Engineering: A
Volume	462
Issue number	1-2
DOIs	https://doi.org/10.1016/j.msea.2005.11.083
Publication status	Published - 25 Jul 2007

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title = "Change in mechanical properties during crystallization of amorphous Mg83Ni9Y8",

abstract = "The different phase transformations occurring in rapidly solidified amorphous ribbons of the Mg83Ni9Y8 (at.%) alloy during heating have been determined. Such transformations involve atomic rearrangement in the amorphous material leading to a first metastable state of extremely fine nanocrystals in the amorphous matrix. Further transformations result in the formation of Mg, Mg2Ni, and an unidentified phase. Heating at temperatures above that of primary crystallization causes additional formation of Mg24Y5 and Ni2Y3 phases. Microhardness measurements were used to evaluate the mechanical properties at room temperature of the structures appearing after each phase transformation. The fine grain size of the crystallized material is the main contribution to harden significantly the totally crystallized alloy. The solid solution of nickel and yttrium in magnesium as well as Mg24Y5 precipitation induce some additional strengthening.",

keywords = "Magnesium alloys, Amorphous materials, Crystallization, Mechanical properties",

author = "Pablo P{\'e}rez and Gerardo Garc{\'e}s and {Gonzalez Sanchez}, Sergio and Heiko Nitsche and Ferdinand Sommer and Paloma Adeva",

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doi = "10.1016/j.msea.2005.11.083",

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TY - JOUR

T1 - Change in mechanical properties during crystallization of amorphous Mg83Ni9Y8

AU - Pérez, Pablo

AU - Garcés, Gerardo

AU - Gonzalez Sanchez, Sergio

AU - Nitsche, Heiko

AU - Sommer, Ferdinand

AU - Adeva, Paloma

PY - 2007/7/25

Y1 - 2007/7/25

N2 - The different phase transformations occurring in rapidly solidified amorphous ribbons of the Mg83Ni9Y8 (at.%) alloy during heating have been determined. Such transformations involve atomic rearrangement in the amorphous material leading to a first metastable state of extremely fine nanocrystals in the amorphous matrix. Further transformations result in the formation of Mg, Mg2Ni, and an unidentified phase. Heating at temperatures above that of primary crystallization causes additional formation of Mg24Y5 and Ni2Y3 phases. Microhardness measurements were used to evaluate the mechanical properties at room temperature of the structures appearing after each phase transformation. The fine grain size of the crystallized material is the main contribution to harden significantly the totally crystallized alloy. The solid solution of nickel and yttrium in magnesium as well as Mg24Y5 precipitation induce some additional strengthening.

AB - The different phase transformations occurring in rapidly solidified amorphous ribbons of the Mg83Ni9Y8 (at.%) alloy during heating have been determined. Such transformations involve atomic rearrangement in the amorphous material leading to a first metastable state of extremely fine nanocrystals in the amorphous matrix. Further transformations result in the formation of Mg, Mg2Ni, and an unidentified phase. Heating at temperatures above that of primary crystallization causes additional formation of Mg24Y5 and Ni2Y3 phases. Microhardness measurements were used to evaluate the mechanical properties at room temperature of the structures appearing after each phase transformation. The fine grain size of the crystallized material is the main contribution to harden significantly the totally crystallized alloy. The solid solution of nickel and yttrium in magnesium as well as Mg24Y5 precipitation induce some additional strengthening.

KW - Magnesium alloys

KW - Amorphous materials

KW - Crystallization

KW - Mechanical properties

U2 - 10.1016/j.msea.2005.11.083

DO - 10.1016/j.msea.2005.11.083

M3 - Article

VL - 462

SP - 211

EP - 214

JO - Materials Science & Engineering A: Structural Materials: Properties, Microstructure and Processing

JF - Materials Science & Engineering A: Structural Materials: Properties, Microstructure and Processing

SN - 0921-5093

IS - 1-2

ER -

Change in mechanical properties during crystallization of amorphous Mg83Ni9Y8

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