Investigation of the Effect of Short Exposure in the Temperature Range of 750–95 °C on the Ductility of Haynes® 282® by Advanced Microstructural Characterization
Artikel i vetenskaplig tidskrift, 2019

A Gleeble-based test method has been developed to study the change in the ductility signature of Haynes® 282® during isothermal exposure from 5 s to 1800 s. A temperature range of 750 to 950 °C has been used to investigate the effect of age-hardening reactions. Microstructural constituents have been analyzed and quantified using scanning and transmission electron microscopy. Carbides present in the material are identified as primary MC-type TiC carbides, Mo-rich M6C secondary carbides, and Cr-rich M23C6 secondary carbides. Gamma prime (γ′) precipitates are present in all the material conditions with particle sizes ranging from 2.5 nm to 58 nm. Isothermal exposure causes the growth of γ′ and development of a grain boundary carbide network. A ductility minimum is observed at 800–850 °C. The fracture mode is found to be dependent on the stroke rate, where a transition toward intergranular fracture is observed for stroke rates below 0.055 mm/s. Intergranular fracture is characterized by microvoids present on grain facets, while ductility did not change during ongoing age-hardening reactions for intergranularly fractured Haynes® 282®.

nickel-based superalloy

strain-age cracking

haynes 282


Fabian Hanning

Chalmers, Industri- och materialvetenskap, Material och tillverkning

Abdul Khaliq Khan

University of Manitoba

Joachim Steffenburg-Nordenström

GKN Aerospace Sweden

Olanrewaju Ojo

University of Manitoba

Joel Andersson

Högskolan Väst


2075-4701 (eISSN)

Vol. 9 12 1357-


Bearbetnings-, yt- och fogningsteknik

Annan materialteknik

Metallurgi och metalliska material





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