Work

Mechanical Properties of an Fe‐Based SAM2×5‐630 Metallic Glass Matrix Composite with Tungsten Particle Additions

Year: 2018

Type: article

Abstract: We present the role of tungsten additions on the mechanical properties of a Fe‐based structural amorphous metal (SAM2×5‐630) containing crystalline tungsten. Matrix cracking by microindentation is inhibited by the addition of tungsten and indicates that tungsten improves the fracture toughness. Response surfaces from nanoindentation arrays indicate that the hardness and modulus of the matrix phase are increased by tungsten additions. Bulk composites with 30 vol% tungsten subjected to 4‐point flexure exhibited brittle fracture behavior and the characteristic strength and Weibull modulus were 165 and 8.7 MPa, respectively. The addition of tungsten did not cause devitrification of the matrix phase.

Source: Advanced Engineering Materials

DOI: 10.1002/adem.201800023

Authors: I‐Chung Cheng, James P. Kelly, Ekaterina Novitskaya, Veronica Eliasson, Andrea M. Hodge, Olivia A. Graeve

Institutions: University of Southern California, University of California San Diego, Alfred University

Language: English

Topic: Metallic Glasses and Amorphous Alloys

Subfield: Metals and Alloys

Field: Materials Science

Domain: Physical Sciences

Open Access status: bronze

Funders: University of Southern California, Defense Threat Reduction Agency

Award: G4136998193