Hot isostatic pressing of nickel aluminide powders
Description
Powder processing of boron-microalloyed Ni3Al alloys followed by consolidation using hot isostatic pressing has been investiged. The influences of time, temperature, and pressure on HIP consolidation have been evaluated and the results are presented in the form of a consolidation map. Microstructural evolution during HIPping and subsequent heat treatment has been characterized and related to the mechanical properties. It has been found that processing parameters must be carefully controlled to suppress sulfur segregation to prior particle boundaries while promoting boron segregation to grain boundaries. Alloying with chromium has been found to promote densification and improve high temperature properties. 12 refs., 10 figs., 2 tabs
Availability note (English)
Available from NTIS, PC A03/MF A01;1 as DE88009677.
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Additional details
Publishing Information
- Imprint Pagination
- 32 p.
- Report number
- EGG-MS--7986
INIS
- Country of Publication
- United States
- Country of Input or Organization
- United States
- INIS RN
- 19091851
- Subject category
- S36: MATERIALS SCIENCE;
- Descriptors DEI
- ALUMINIUM ALLOYS; BORON ADDITIONS; CHROMIUM ADDITIONS; DENSITY; HOT PRESSING; MATHEMATICAL MODELS; MECHANICAL PROPERTIES; MICROSTRUCTURE; NICKEL BASE ALLOYS; POWDERS
- Descriptors DEC
- ALLOYS; CRYSTAL STRUCTURE; FABRICATION; MATERIALS WORKING; NICKEL ALLOYS; PHYSICAL PROPERTIES; PRESSING