@inproceedings{2c2fd055a82247d0bef2d09b179ab26d,
title = "Experimental validation of long term thermal exposure sensitization of AA5xxx alloys",
abstract = "In the present work, β-phase formation along grain boundaries has been evaluated by scanning transmission electron microscopy (STEM) and energy-dispersive X-ray spectroscopy (EDS) analysis methods. The thickness of β-phase along grain boundaries, measured by STEM for a 1-year thermally treated sample, was estimated to be 15 - 20 nm. Etching effects of phosphoric acid solution and ammonium persulfate solution on the Al matrix are discussed. The effect of ASTM G67 nitric acid attack on different surfaces was investigated. Mass loss data was collected for several AA5xxx alloys using long-term (∼ 12 months), constant temperature (40 to 70°C) exposure tests. Other samples were treated in thermal exposure furnaces with cyclic temperatures (40 to 45°C and 50 to 70°C) to represent the heating cycles in service conditions.",
keywords = "ASTM G67, EDS, STEM, Sensitization, β-phase",
author = "Yakun Zhu and Soumya Kar and Free, {Michael L.} and Cullen, {David A.} and Allard, {Lawrence F.}",
year = "2012",
language = "English",
isbn = "9781622760787",
series = "NACE - International Corrosion Conference Series",
pages = "3439--3446",
booktitle = "NACE - International Corrosion Conference Series",
note = "Corrosion 2012 ; Conference date: 11-03-2012 Through 15-03-2012",
}