EFFECT OF PROCESS CONDITIONS ON THE DISTRIBUTION OF BORON IN A POWDER-COMPACTED NICKEL SUPERALLOY

Authors
SHULGA AV KUZMICHEVA LG VAULIN DD KOLESNIKOV YN FATKULLIN OK
Citation
Av. Shulga et al., EFFECT OF PROCESS CONDITIONS ON THE DISTRIBUTION OF BORON IN A POWDER-COMPACTED NICKEL SUPERALLOY, Russian metallurgy. Metally, (4), 1996, pp. 60-68
Citations number
10
Categorie Soggetti
Metallurgy & Metallurigical Engineering
Journal title
Russian metallurgy. Metally → ACNP
ISSN journal
00360295
Issue
4
Year of publication
1996
Pages
60 - 68
Database
ISI
SICI code
0036-0295(1996):4<60:EOPCOT>2.0.ZU;2-I
Abstract
Track autoradiography, metallography and electron probe X-ray analysis were used to study the distribution of boron among structure componen ts of a powder-compacted nickel superalloy Ni-9Cr-16Co-3Mo-5Al-2Ti-7W- Nb-Hf-C-B at various stages of production of components. Regularities of boron distribution in semiproducts compacted from powders obtained by centrifugal and gas-jet atomization were established. Mechanisms of formation of ''anomalous'' particles with increased boron content and of boron migration to grain boundaries on heat treatment are advanced .