The stress corrosion cracking (SCC) behavior of α-Al bronze alloy (Cu7Al) was investigated in 3.5% NaCl solution in the absence and in the presence of different concentrations of Na2S under open circuit potentials using the constant slow strain rate technique. Also, the addition of different concentrations of cysteine (cys), and alanine (ala) to the test solution, as corrosion inhibitors, was studied. Increasing the sulfide ions concentration in polluted salt water resulted in a reduction in the maximum stress (σmax) and an increase in the susceptibility of α-Al bronze towards SCC. The addition of ala and cys to the test electrolyte increased the time to failure by changing the mode of failure from brittle transgranular cracking to ductile failure. Electrochemical tests were performed to assist the interpretation of the SCC data. Electrochemical impedance spectroscopy (EIS) was used to investigate the mechanism of corrosion inhibition. The results support film rupture and anodic dissolution at slip steps as the operating mechanism of the SCC process. Therefore, cys and ala can be considered as potential environmentally-friendly corrosion inhibitors for the SCC of α-Al bronze in 3.5% NaCl solution containing sulfide ions.
 Z. Ahmed, “Corrosion Resistance of Cast Al-Bronze Containing Cr and Si Additions,” British Journal of Corrosion, Vol. 14, No. 4, 1976, p. 149.
 R. N. Singh, N. Verma and W. R. Singh, “Influence of Minor Additions of La, Ce and Nd on the Mechanical and Corrosion Behavior of Aluminum Bronze in HNO3 Solution,” Corrosion, Vol. 45, No. 3, 1989, pp. 222-229.
 C. Manfredi, S. Simpson and S. R. De Sanchez, “Selection of Copper Base Alloys for Use in Polluted Seawater, Corrosion, Vol. 43, No. 8, 1987, pp. 458-464.
 B. G. Ateya, E. A. Ashour and S. M. Sayed, “Corrosion of alpha-Aluminum Bronze in Saline Water,” Journal of The Electrochemical Society, Vol. 141, No. 1, 1994, pp. 71-78. http://dx.doi.org/10.1149/1.2054712
 E. A. Ashour, E. A. Abd El Meguid and B. G. Ateya, “Stress Corrosion Behavior of Alpha Aluminum Bronze in Concentrated Alkali Solutions,” Corrosion, Vol. 57, No. 9, 2001, pp. 749-752.
 B. G. Ateya, E. A. Ashour and S. M. Sayed, “Stress Corrosion Behavior of α-Aluminum Bronze in Saline Water,” Corrosion, Vol. 50, No. 1, 1994, pp. 20-25.
 Z. I. Tanabe, “Effect of Metal Composition and Heat Treatment on De-Aluminification of Cu-Al Alloys,” Corrosion Science, Vol. 4, No. 1, 1964, pp. 413-423.
 P. Collins and D.J. Duquette, “Corrosion Fatigue Behavior of a Duplex Aluminum Bronze Alloy,” Corrosion, Vol. 34, No. 4, 1978, pp. 119-124.
 N. K. Allam, A. A. Nazeer, G. I. Youssef and E. A. Ashour, “Electrochemical and Stress Corrosion Cracking Behavior of α-Aluminum Bronze and α-Brass in Nitrite Solutions: A Comparative Study,” Corrosion, Vol. 69, No. 1, 2013, pp. 77-84. http://dx.doi.org/10.5006/0660
 J. F. Bates and J. M. Popplewell, “Corrosion of Condenser tube Alloys in Sulfide Contaminated Brine,” Corrosion, Vol. 31, No. 8, 1975, pp. 269-275.
 E. A. Ashour, E. A. Abd El Meguid and B. G. Ateya, “Effects of Thiosulfate on Susceptibility of Type 316 Stainless Steel to Stress Corrosion Cracking in 3.5% Aqueous Sodium Chloride,” Corrosion, Vol. 53, No. 8, 1997, pp. 612-616. http://dx.doi.org/10.5006/1.3290293
 N. K. Allam, E. A. Ashour, H. S. Hegazy, B. E. El-Anadouli and B. G. Ateya, “Effects of Benzotriazole on the Corrosion of Cu10Ni Alloy in Sulfide-Polluted Salt Water,” Corrosion Science, Vol. 47, No. 9, 2005, pp. 2280-2292.
 N. K. Allam and E. A. Ashour, “Promoting Effect of Low Concentration of Benzotriazole on the Corrosion of Cu10Ni Alloy in Sulfide Polluted Salt Water,” Applied Surface Science, Vol. 254, No. 16, 2008, pp. 5007-5011.
 A. El-Domiaty and J. N. Alhajji, “The Susceptibility of 90Cu-10Ni Alloy to Stress Corrosion Cracking in Seawater Polluted by Sulfide Ions,” Journal of Materials Engineering and Performance, Vol. 6, No. 4, 1997, pp. 534-544. http://dx.doi.org/10.1007/s11665-997-0126-9
 D. Tromans and R. H. Sun, “Anodic Polarization Behavior of Copper in Aqueous Chloride-Benzotriazole Solutions,” Journal of the Electrochemical Society, Vol. 138, No. 11, 1991, pp. 3235-3244.
 S. Neodo, D. Carugo, J. A. Wharton and K. R. Stokes, “Electrochemical Behaviour of Nickel-Aluminium Bronze in Chloride Media: Influence of pH and Benzotriazole,” Journal of Electroanalytical Chemistry, Vol. 695, 2013, pp. 38-46.
 A. Schussler and H. E. Exner, “The Corrosion of NickelAluminium Bronzes in Seawater—I. Protective Layer Formation and the Passivation Mechanism,” Corrosion Science, Vol. 34, No. 11, 1993, pp. 1793-1802.
 W. A. Badwy, F. M. Al Kharafi and A. S. El Azab, “Electrochemical Behaviour and Corrosion Inhibition of Al, Al-6061 and Al-Cu in Neutral Aqueous Solutions,” Corrosion Science, Vol. 41, No. 4, 1999, pp. 709-727.
 W.A. Badwy, M. El Rabiee, N. H. Hilal and H. Nady, “Electrochemical Behavior of Mg and Some Mg Alloys in Aqueous Solutions of Different pH,” Electrochimica Acta, Vol. 55, No. 6, 2010, p. 1880.
 F. Bentiss, M. Lagrence, M. Traisnel and J. C. Hornez, “The Corrosion Inhibition of Mild Steel in Acidic Media by a New Triazole Derivative,” Corrosion Science, Vol. 41, No. 4, 1999, pp. 789-803.
 C. W. Yan, H. C. Lin and C. N. Cao, “Investigation of Inhibition of 2-Mercaptobenzoxazole for Copper Corrosion,” Electrochimica Acta, Vol. 45, No. 17, 2000, pp. 2815-2821. http://dx.doi.org/10.1016/S0013-4686(00)00385-6
 D. Q. Zhang, L. X. Gao and G. D. Zhou, “Inhibition of Copper Corrosion in Aerated Hydrochloric Acid Solution by Heterocyclic Compounds Containing a Mercapto Group,” Corrosion Science, Vol. 46, No. 12, 2004, pp. 3031-3040. http://dx.doi.org/10.1016/j.corsci.2004.04.012