Published April 2005 | Version v1
Journal article Metadata-only

Investigation of Ti-Fe-Co bulk alloys with high strength and enhanced ductility

Creators

  • 1. Laboratory for Non-equilibrium Materials, Institute for Materials Research, Tohoku University, Katahira 2-1-1, Aoba-Ku, Sendai 980-8577 (Japan)
  • 2. Research and Development Project, CREST, Japan Science and Technology Agency, Sendai 985-8577 (Japan)

Description

High-strength Ti-Fe-Co alloys were produced in the shape of arc-melted ingots with the dimensions of about 20-25mm in diameter and 7-10mm in height. The structure of the Ti-Fe-Co alloys (at Fe/Co ratio >1) studied by X-ray diffractometry and scanning electron microscopy consisted of an ordered Pm3-bar m Ti(FeCo) compound and a disordered body-centered cubic Im3-bar m β-Ti solid solution. The optimization of the Ti-Fe-Co alloy composition is performed from the viewpoint of both high strength and ductility. The strongest Ti-Fe-Co alloys have a hypereutectic structure and exhibit a high strength of about 2000MPa and a plastic deformation of 15%. The high strength and ductility values can be achieved without using the injection mould casting or rapid solidification procedure. The deformation behavior and the fractography of Ti-Fe-Co alloys are studied in detail

Additional details

Identifiers

DOI
10.1016/j.actamat.2005.01.012;
PII
S1359-6454(05)00028-5;

Publishing Information

Journal Title
Acta Materialia
Journal Volume
53
Journal Issue
7
Journal Page Range
p. 2009-2017
ISSN
1359-6454
CODEN
ACMAFD

INIS

Country of Publication
United Kingdom
Country of Input or Organization
International Atomic Energy Agency (IAEA)
INIS RN
37055945
Subject category
S36: MATERIALS SCIENCE;
Descriptors DEI
ALLOYS; BCC LATTICES; CASTING; DEFORMATION; DUCTILITY; FRACTOGRAPHY; OPTIMIZATION; PLASTICITY; SCANNING ELECTRON MICROSCOPY; SHAPE; SOLID SOLUTIONS; SOLIDIFICATION; X-RAY DIFFRACTION
Descriptors DEC
COHERENT SCATTERING; CRYSTAL LATTICES; CRYSTAL STRUCTURE; CUBIC LATTICES; DIFFRACTION; DISPERSIONS; ELECTRON MICROSCOPY; FABRICATION; HOMOGENEOUS MIXTURES; MECHANICAL PROPERTIES; MICROSCOPY; MIXTURES; PHASE TRANSFORMATIONS; SCATTERING; SOLUTIONS; TENSILE PROPERTIES

Optional Information

Copyright
Copyright (c) 2005 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.