Published 2017 | Version v1
Journal article Metadata-only

Influence of the γ' phase on the creep behavior of a new polycrystalline nickel-based superalloy (AD 730)

Creators

  • 1. Hochschule Osnabrueck (Germany). Fakulaet fuer Ingenieurwissenschaften und Informatik

Description

Demands for cost-efficiency and a flexible use of gas turbines are constantly increasing, creating a call for new alloys which allow achieving better efficiencies. Today's limit of use of common polycrystalline wrought alloys is 650 C, whereas the new γ / γ' wrought alloy AD 730 is designed for use at 700 C. The presented work examines and discusses the impact of the microstructure on the alloy's creep behavior. Supersolvus and subsolvus solution annealing was performed to provide for a coarse-grained and fine-grained microstructure which was subsequently aged at different aging times.

Additional details

Additional titles

Original title (German)
Einfluss der γ'-Phase auf das Kriechverhalten einer neuen polykristallinen Nickelbasis-Superlegierung (AD 730)

Publishing Information

Journal Title
Praktische Metallographie
Journal Volume
54
Journal Issue
12
Journal Page Range
p. 838-848
ISSN
0032-678X
CODEN
PMTLA5

INIS

Country of Publication
Germany
Country of Input or Organization
Germany
INIS RN
49011933
Subject category
S36: MATERIALS SCIENCE;
Descriptors DEI
AGING; ALUMINIUM ALLOYS; ANNEALING; CHROMIUM ALLOYS; COBALT ALLOYS; CREEP; FRACTOGRAPHY; GAS TURBINES; HEAT RESISTING ALLOYS; IRON ALLOYS; METALLOGRAPHY; MICROSTRUCTURE; MOLYBDENUM ALLOYS; NICKEL BASE ALLOYS; NIOBIUM ALLOYS; PHASE STUDIES; TEMPERATURE RANGE 0400-1000 K; TITANIUM ALLOYS
Descriptors DEC
ALLOYS; EQUIPMENT; HEAT RESISTANT MATERIALS; HEAT TREATMENTS; MACHINERY; MATERIALS; MECHANICAL PROPERTIES; NICKEL ALLOYS; TEMPERATURE RANGE; TRANSITION ELEMENT ALLOYS; TURBINES; TURBOMACHINERY