Low-Temperature and Corrosion Fatigue Crack-Growth Resistance of D16ATNV and V95T1 Aluminum Alloys after Long-Term Operation

2014 ◽  
Vol 50 (3) ◽  
pp. 350-357 ◽  
Author(s):  
O. P. Ostash ◽  
I. M. Andreiko ◽  
Yu. V. Holovatyuk ◽  
O. I. Semenets’ ◽  
L. B. Koval’chuk
Author(s):  
Takeshi Ogawa ◽  
Yuki Sugiyama ◽  
Toshihiko Kanezaki ◽  
Noboru Hayashi

A hydrogen gas container is one of the critical components for fuel cell vehicles (FCV), which is expected for CO2-free personal transportation. In the early stage of commercial FCV, the major container structure will be a compressed hydrogen gas cylinder, which consists of metal or plastic linear with metal boss and carbon fiber reinforced plastics (CFRP). In order to choose an appropriate material for the metal boss and metal liner, corrosion resistance should be evaluated for various aspects such as corrosion fatigue crack growth (CFCG) and stress corrosion cracking (SCC) in the high pressure hydrogen as well as in salt water environment for the purpose of vehicle use. In the present study, CFCG characteristics were evaluated for several aluminum alloys in air and in salt waters with various concentrations. The results showed that the crack growth rates were accelerated in salt water for all the materials and their environmental sensitivities were compared. The concentrations of the salt water exhibited minor effect on the fatigue crack growth rates. These CFCG characteristics were compared with the corrosion test results based on the ISO 7866 Annex A [1]. A basic idea was proposed for the evaluation of compressed hydrogen gas containers and the important material properties were suggested.


2005 ◽  
Vol 8 (3) ◽  
pp. 287-291 ◽  
Author(s):  
Elenice Maria Rodrigues ◽  
Adalberto Matias ◽  
Leonardo Barbosa Godefroid ◽  
Fernando Luiz Bastian ◽  
Kassim S. Al-Rubaie

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