The impact of micro-alloying on relaxation dynamics in Pd40Ni40P20 bulk metallic glass

Hubek René, Seleznev Mikhail, Binkowski Isabelle, Peterlechner Martin, Divinski Sergiy V., Wilde Gerhard

Research article (journal)

Abstract

The impact of Co micro-alloying on low temperature specific heat capacity and the relaxation processes in a model Pd40Ni40P20 bulk metallic glass in both as-cast and cold-rolled states was investigated. In addition to an excess (Boson) peak at low temperatures of about 12 to 14 K, a magnetic heat capacity anomaly in the Co alloyed glass below 10 K was observed. The measured Boson peak heights and the fictive temperatures both advocate a much faster β relaxation in the micro-alloyed glass. Yet, the micro-alloying does not measurably affect the enthalpy associated with α-relaxation. The impact of shear bands on the thermodynamic properties of the micro-alloyed glass is discussed.

Details zur Publikation

Release year: 2018
Language in which the publication is written: English