Accession Number:

ADA460527

Title:

High Temperature Properties and Aging-Stress Related Changes of FeCo Materials

Descriptive Note:

Final rept. 1 Oct 2001-30 May 2006

Corporate Author:

AIR FORCE RESEARCH LAB WRIGHT-PATTERSON AFB OH PROPULSION DIRECTORATE

Personal Author(s):

• Horwath, John
• Turgut, Zafer
• Fingers, Richard

Report Date:

2006-07-01

Pagination or Media Count:

130.0

Abstract:

This publication focuses on high temperature magnetic, mechanical, and electrical properties of three Fe-Co alloys intended for use in high stress and high temperature environments. The specific alloys of interest are Hipercotrade name Alloy 27, Hipercotrade name Alloy 50 and Hipercotrade name Alloy 50 HS. Aging related changes in magnetic, mechanical, and electrical performance throughout the materials lifetime are documented. The effect of compressive and tensile stresses that may originate from product assembly and rotational forces during operation was also studied. Information contained in this publication is only specific to the alloys with given annealing conditions since magnetic and mechanical properties depend greatly on the annealing conditions performed after cold deformation. However, absence of any grain growth during 500 deg C aging up to 5,000 hours indicates that the observed trends should be representative for the same alloy compositions with different annealing histories.

Descriptors:

• *STRESSES
• *AGING(MATERIALS)
• *IRON ALLOYS
• *COBALT ALLOYS
• *HIGH TEMPERATURE
• MAGNETIC PROPERTIES
• COMPRESSIVE PROPERTIES
• GRAIN GROWTH
• MECHANICAL PROPERTIES
• TENSILE STRESS
• ELECTRICAL PROPERTIES

Subject Categories:

• Properties of Metals and Alloys

Distribution Statement:

APPROVED FOR PUBLIC RELEASE