Accession Number : ADA138296

Title :   Metastable Transition Metal Alloys Produced by Rapid Quenching: Structure and Properties.

Descriptive Note : Final rept. 1 Apr 76-30 Jun 80,

Corporate Author : NORTHEASTERN UNIV BOSTON MA BARNETT INST OF CHEMICAL ANALYSIS AND MATERIALS SCIENCE

Personal Author(s) : Giessen,B C

PDF Url : ADA138296

Report Date : Jan 1984

Pagination or Media Count : 114

Abstract : Metastable transition metal alloys, primarily, metallic glasses, were prepared by rapid solidification processing (melt spinning and arc-furnace hammer-and-anvil quenching); appropriate properties of these alloys were investigated. Specifically, glassy alloys containing transition metals such as Ti, Zr, Nb, Ta, Ni, Rh and Ir, as well as metals such as U, Ca and Cu and non-metallic additives such as O were studied; many of these glasses were prepared in this program for the first time. Properties studied included thermal stability (glass transition temperature and crystallization temperature), elastic modulus (measured by a newly adapted dynamic technique of impulse induced resonance), microhardness, and electrical transport (resistivity and thermoelectricity). Alloy constitution was studied. Rules for the prediction of ready glass formation based on alloy properties were formulated; a universal correlation between microhardness and elastic modulus was described. A new multilayer melt spinning technique was implemented. Nineteen publications resulted from this program and are listed in the report. (Author)

Descriptors :   *Glass, *Transition metals, *Metastable alloys, Production, Quenching, Quick reaction, Solidification, Melts, Spinning(Industrial Processes), Thermal stability, Modulus of elasticity, Microhardness, Electrical resistance, Thermoelectricity, Refractory metals, Magnetic properties, Electrical conductivity, Crystallization

Subject Categories : Ceramics, Refractories and Glass
      Metallurgy and Metallography
      Fabrication Metallurgy

Distribution Statement : APPROVED FOR PUBLIC RELEASE