On the orientation dependence of the intermediate-temperature creep behavior of a monocrystalline nickel-base superalloy

Journal Article · Sat Oct 01 00:00:00 EDT 1994 · Scripta Metallurgica et Materialia; (United States)

DOI:https://doi.org/10.1016/0956-716X(94)90497-9· OSTI ID:6983215

Sass, V; Schneider, W; Mughrabi, H ^[1]

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1. Univ. Erlangen-Nuernberg, Erlangen (Germany). Inst. fuer Werkstoffwissenschaften

Over the last few years monocrystalline [gamma][prime]-hardened nickel-base superalloys have been used increasingly as turbine blade material in some modern gas turbines. Since monocrystalline materials are highly anisotropic, a detailed understanding of the orientation dependence of the mechanical properties and especially of the creep behavior is necessary. Therefore, it should be taken into account that the anisotropic mechanical behavior is most pronounced in the temperature range of about 700--850 C. The purpose of the present work is to study in some detail the anisotropy of creep deformation of near [001] oriented single crystals of the second generation nickel-base superalloy CMSX-4 at 800 C under constant stress. Special attention was paid to the investigation of primary creep behavior.

• OSTI ID: 6983215
• Journal Information: Scripta Metallurgica et Materialia; (United States), Journal Name: Scripta Metallurgica et Materialia; (United States) Vol. 31:7; ISSN 0956-716X; ISSN SCRMEX
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360102 -- Metals & Alloys-- Structure & Phase Studies
360103* -- Metals & Alloys-- Mechanical Properties
ALLOYS
CREEP
DEFORMATION
GRAIN ORIENTATION
MECHANICAL PROPERTIES
MICROSTRUCTURE
NICKEL ALLOYS
NICKEL BASE ALLOYS
ORIENTATION
TEMPERATURE DEPENDENCE
TEMPERATURE RANGE
TEMPERATURE RANGE 1000-4000 K