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Metals 2015, 5(4), 2428-2434; doi:10.3390/met5042428

Hot Ductility Loss in a Fe-Ni-Based Superalloy

1
Department of Material Science and Engineering, National Tsing-Hua University (NTHU), Hsinchu 30013, Taiwan
2
Nanopowder and Thin Film Technology Center, ITRI-South, Industrial Technology Research Institute, Chutung 31040, Taiwan
*
Author to whom correspondence should be addressed.
Academic Editor: Johan Moverare
Received: 31 October 2015 / Revised: 29 November 2015 / Accepted: 15 December 2015 / Published: 21 December 2015
(This article belongs to the Special Issue Superalloys)
View Full-Text   |   Download PDF [538 KB, uploaded 21 December 2015]   |  

Abstract

High temperature tensile tests have been conducted on samples of a Fe-Ni based superalloy, Incoloy A-286, and significant ductility loss has been observed at 1220 °C. Titanium-rich, thin-film-like phase has been found on the inter-granular facets of fracture surfaces. It appears that sulfur content of Ti-rich phase was higher than that of the matrix. At 1220 °C, liquation of Ti-rich phases has resulted in thin-film-like morphology along the grain boundary and caused the ductility loss during tensile deformation. View Full-Text
Keywords: superalloy; incoloy A-286; hot ductility loss superalloy; incoloy A-286; hot ductility loss
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Li, C.-W.; Yeh, A.-C.; Chen, C.-S.; Wang, W.-R. Hot Ductility Loss in a Fe-Ni-Based Superalloy. Metals 2015, 5, 2428-2434.

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