EFFECT OF PHOSPHORUS ON SOLIDIFICATION PROCESS AND SEGREGATION OF DIRECTIONALLY SOLIDIFIED IN738 SUPERALLOY

Authors
ZHU HQ HU ZQ ZHU YX GUO SR GUAN HR SHI CX MORINAGA M MURATA Y
Citation
Hq. Zhu et al., EFFECT OF PHOSPHORUS ON SOLIDIFICATION PROCESS AND SEGREGATION OF DIRECTIONALLY SOLIDIFIED IN738 SUPERALLOY, Metallurgical and materials transactions. B, Process metallurgy and materials processing science, 26(4), 1995, pp. 831-837
Citations number
15
Categorie Soggetti
Material Science","Metallurgy & Metallurigical Engineering
Journal title
Metallurgical and materials transactions. B, Process metallurgy and materials processing science → ACNP
ISSN journal
10735615
Volume
26
Issue
4
Year of publication
1995
Pages
831 - 837
Database
ISI
SICI code
1073-5615(1995)26:4<831:EOPOSP>2.0.ZU;2-H
Abstract
The effect of phosphorus on the solidification and the solute segregat ion of a directionally solidified IN738 Ni-based superalloy was invest igated experimentally employing a method of partially directional soli dification and subsequent quick quenching. It was found that the phosp horus addition widened the solidus-liquidus temperature interval of th e alloy. Both the P content and the solidification rate affected the m orphology of the solid-liquid interface and the precipitation of phosp hides in the alloy. phosphorus segregated largely in the intercellular /interdendritic regions and promoted the segregation of other alloying elements in the solidified structure.