Published April 30, 2010 | Version v1
Journal article Metadata-only

Evaluation of yield strength anomaly of Alloy 718 at 700-800 oC

Creators

  • 1. Department of Mechanical Engineering, University of Nevada, Las Vegas (UNLV), 4505 Maryland Parkway, Box 454027, Las Vegas, NV 89154-1027 (United States)

Description

Alloy 718 showed enhanced tensile yield strength and reduced ductility at 700 and 800 oC, a possible indication of yield strength anomaly phenomenon. The results of TEM, STEM and EDS verified the formation and precipitation of γ'' and δ phases at these temperatures that could have contributed to such anomalous behavior of this alloy under tensile loading. Presence of nickel (Ni) and niobium (Nb) was observed in both phases, suggesting a composition of Ni3Nb for them.

Availability note (English)

Available from http://dx.doi.org/10.1016/j.jallcom.2010.02.023

Additional details

Identifiers

DOI
10.1016/j.jallcom.2010.02.023;
PII
S0925-8388(10)00228-8;

Publishing Information

Journal Title
Journal of Alloys and Compounds
Journal Volume
496
Journal Issue
1-2
Journal Page Range
p. 393-398
ISSN
0925-8388
CODEN
JALCEU

INIS

Country of Publication
Netherlands
Country of Input or Organization
International Atomic Energy Agency (IAEA)
INIS RN
42031291
Subject category
S36: MATERIALS SCIENCE;
Descriptors DEI
CHROMIUM ALLOYS; DISLOCATIONS; DUCTILITY; EVALUATION; NICKEL ALLOYS; NIOBIUM ALLOYS; PHASE TRANSFORMATIONS; PRECIPITATION; TEMPERATURE RANGE 0400-1000 K; TEMPERATURE RANGE 1000-4000 K; TRANSMISSION ELECTRON MICROSCOPY; YIELD STRENGTH
Descriptors DEC
ALLOYS; CRYSTAL DEFECTS; CRYSTAL STRUCTURE; ELECTRON MICROSCOPY; LINE DEFECTS; MECHANICAL PROPERTIES; MICROSCOPY; SEPARATION PROCESSES; TEMPERATURE RANGE; TENSILE PROPERTIES; TRANSITION ELEMENT ALLOYS

Optional Information

Copyright
Copyright (c) 2010 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.