Published July 15, 2008
| Version v1
Journal article
The characteristics of serrated flow in superalloy IN738LC
- 1. Department of Materials Science and Engineering, Case Western Reserve University, Cleveland, OH 44106 (United States)
- 2. Department of Materials Science and Engineering, Sharif University of Technology, Azadi Avenue, Tehran (Iran, Islamic Republic of)
Description
Serrated flow was investigated in superalloy IN738LC, a nickel-base γ' age-hardened alloy. In this material serrated flow appeared between 350 and 450 deg. C and strain rate of (8.77 x 10-5 to 8.77 x 10-3) s-1. Activation energy for this process was calculated to be 0.69-0.86 eV which is in good agreement with the values reported for similar alloys. Results show that the diffusion rate of substitutional solute atoms at this temperature range is too low to cause this effect. This suggests that the interaction of solute atoms and moving dislocation is responsible for the observed serrated flow in this alloy
Availability note (English)
Available from http://dx.doi.org/10.1016/j.msea.2007.09.061Additional details
Identifiers
- DOI
- 10.1016/j.msea.2007.09.061;
- PII
- S0921-5093(07)01702-9;
Publishing Information
- Journal Title
- Materials Science and Engineering. A, Structural Materials: Properties, Microstructure and Processing
- Journal Volume
- 486
- Journal Issue
- 1-2
- Journal Page Range
- p. 376-380
- ISSN
- 0921-5093
- CODEN
- MSAPE3
INIS
- Country of Publication
- Netherlands
- Country of Input or Organization
- International Atomic Energy Agency (IAEA)
- INIS RN
- 40025595
- Subject category
- S36: MATERIALS SCIENCE;
- Descriptors DEI
- ACTIVATION ENERGY; ALLOY-IN-738; DISLOCATIONS; MILLI EV RANGE; STRAIN RATE
- Descriptors DEC
- ALLOY-NI61CR16CO9AL3TI3W3; ALLOYS; ALUMINIUM ALLOYS; BORON ADDITIONS; BORON ALLOYS; CHROMIUM ALLOYS; COBALT ALLOYS; CORROSION RESISTANT ALLOYS; CRYSTAL DEFECTS; CRYSTAL STRUCTURE; ENERGY; ENERGY RANGE; HEAT RESISTANT MATERIALS; HEAT RESISTING ALLOYS; INCONEL ALLOYS; LINE DEFECTS; MATERIALS; MOLYBDENUM ALLOYS; NICKEL ALLOYS; NICKEL BASE ALLOYS; NIOBIUM ADDITIONS; NIOBIUM ALLOYS; TANTALUM ALLOYS; TITANIUM ALLOYS; TRANSITION ELEMENT ALLOYS; TUNGSTEN ALLOYS; ZIRCONIUM ADDITIONS; ZIRCONIUM ALLOYS
Optional Information
- Copyright
- Copyright (c) 2007 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.