Fracture initiation of ÉP741NP PM nickel alloy in LCF tests

Development of the technological process for obtaining intermediate products from granules (powder metals) by hot isostatic pressing (HIP) has made it possible to use the EP741NP nickel-base complex alloy for production of the heavily loaded parts (disks and shafts) of gas turbine engines. One of th...

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Published inMetal science and heat treatment Vol. 35; no. 5-6; pp. 355 - 358
Main Authors FAINBRON, A. S, PERTSOVSKII, N. Z, SAVIN, V. N
Format Journal Article
LanguageEnglish
Published New York, NY Springer 01.05.1993
Subjects
Applied sciences
Exact sciences and technology
Fractures
Mechanical properties and methods of testing. Rheology. Fracture mechanics. Tribology
Metals. Metallurgy
Titanium alloy
Nickel base alloys
Hot isostatic pressing
Rupture
Non metallic inclusion
Sintered alloy
Aluminium alloy
Experimental study
Powder metallurgy
Fatigue test
Transmission electron microscopy
Fatigue strength
Chromium alloy
Sintering
Cobalt alloy
Fracture surface
Strength
Crack initiation
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Summary:Development of the technological process for obtaining intermediate products from granules (powder metals) by hot isostatic pressing (HIP) has made it possible to use the EP741NP nickel-base complex alloy for production of the heavily loaded parts (disks and shafts) of gas turbine engines. One of the important operational characteristics of this alloy is its resistance to low-cycle fatigue (LCF) at the working temperatures. We examine the nature of fracture of the EP741NP alloy in LCF tests.
Bibliography:ObjectType-Article-2
SourceType-Scholarly Journals-1
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content type line 23
ISSN:0026-0673
1573-8973
DOI:10.1007/BF00780925