Hostname: page-component-586b7cd67f-tf8b9 Total loading time: 0 Render date: 2024-11-24T17:54:59.015Z Has data issue: false hasContentIssue false
  • English
  • Français

Microstructure and Mechanical Properties of an Extruded Fe30Ni20Mn25Al25 Alloy

Published online by Cambridge University Press:  26 February 2011

J. A. Loudis ,
T. C. Boyd ,
D. A. Coen  and
I. Baker
J. A. Loudis
Affiliation:
[email protected] School of Engineering at Dartmouth CollegeHanover NH 03755-8000, USAUnited States
T. C. Boyd
Affiliation:
[email protected], Thayer School of Engineering at Dartmouth College, Hanover, NH, 03755-8000, USA, United States
D. A. Coen
Affiliation:
[email protected], Thayer School of Engineering at Dartmouth College, Hanover, NH, 03755-8000, USA, United States
I. Baker
Affiliation:
[email protected], Thayer School of Engineering at Dartmouth College, Hanover, NH, 03755-8000, USA, United States
Get access

Abstract

A spinodal alloy, Fe30Ni20Mn25Al25, was produced by casting followed by hot extrusion. The microstructure consisted of coherent, 20-30 nm wide rods of alternating body-centered cubic (b.c.c.) and ordered B2 phases aligned along <100>. The room temperature mechanical properties were determined under compression over a range of strain rates. The as-extruded yield strength, which was strain-rate dependent, was ~1400 MPa. Annealing at 550°C led to the precipitation of large unit cell cubic phase and to an increase in hardness. Post-mortem TEM analysis of the compressed specimens identified dislocations having <111> Burgers vectors.

Keywords

strengthcrystallographic structuredislocations
Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 980: Symposium II – Advanced Intermetallic-Based Alloys , 2006 , 0980-II01-02
Copyright
Copyright © Materials Research Society 2007

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)