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Journal of Materials Engineering and Performance

Erschienen in:

01.12.2013

Tensile Behavior of Alloy 718 in Hot Corrosive Environment

verfasst von: G. S. Mahobia, Neeta Paulose, S. L. Mannan, K. Chattopadhyay, N. C. Santhi Srinivas, Vakil Singh

Erschienen in: Journal of Materials Engineering and Performance | Ausgabe 12/2013

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Abstract

Nickel-iron-based alloy 718 was thermally exposed in peak-aged condition at 550 and 650 °C, from 5 to 100 h, with and without salt coatings and was tested in tension at room temperature and elevated temperatures. Standard tensile specimens were coated with three different salts (in wt.%): NaCl(100), Na₂SO₄ + NaCl (75/25), and Na₂SO₄ + NaCl + V₂O₅ (90/5/5). Exposure of salt-coated specimens at 550 and 650 °C revealed formation of scales and corrosion pits. Tensile deformation resulted in cracking of the surface oxide/corrosion scale. The uncoated specimens showed formation of oxide scales on the surface, without any cracking whereas the salt-coated specimens showed surface cracking and pitting at some places. However, tensile properties were not degraded due to salt coatings.

Vorheriger Artikel Stress Corrosion Cracking Study of Aluminum Alloys Using Electrochemical Noise Analysis

Nächster Artikel A Comparative Analysis of the Impact of Tool Design to Fatigue Behavior of Single-Sided and Double-Sided Welded Butt Joints of EN AW 6082-T6 Alloy

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Titel: Tensile Behavior of Alloy 718 in Hot Corrosive Environment
verfasst von: G. S. Mahobia
Neeta Paulose
S. L. Mannan
K. Chattopadhyay
N. C. Santhi Srinivas
Vakil Singh
Publikationsdatum: 01.12.2013
Verlag: Springer US
Erschienen in: Journal of Materials Engineering and Performance / Ausgabe 12/2013
Print ISSN: 1059-9495
Elektronische ISSN: 1544-1024
DOI: https://doi.org/10.1007/s11665-013-0706-9

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