Influence of zinc electro-plated coating on dynamic tensile properties of TRIP-aided steels

• Published in: Surface & coatings technology 2007-05, Vol.201 (16), p.6922-6927
• Main Authors: Wei, Xi-Cheng, Fu, Ren-Yu, Lin Li
• Format: Article
• Language: English
• Subjects: Applied sciences; Cross-disciplinary physics: materials science; rheology; Energy absorbability; Exact sciences and technology; Materials science; Mechanical properties and methods of testing. Rheology. Fracture mechanics. Tribology; Metallic coatings; Metals. Metallurgy; Other topics in materials science; Physics; Production techniques; Strain rate; Surface treatment; Tensile property; TRIP-aided steel; Zn electroplating
• ISSN: 0257-8972; 1879-3347
• DOI: 10.1016/j.surfcoat.2006.12.001

Influence of Zinc coating on dynamic tensile properties of Si–Mn TRIP-aided steels with and without Nb-addition was investigated in the range of 400 to 1600 s − 1 . The dynamic tensile properties were determined using a pneumatic indirect bar–bar tensile impact tester. The results indicate that: (i) the dynamic tensile behavior of TRIP-aided steel with or without coating is rather sensitive to the strain rate; (ii) Zinc coating strongly affects the deformation of substrate during high rate deformation and decreases the yield and tensile strength with mutative elongation behavior at the strain rate of 1300 s − 1 ; (iii) the energy absorbability of TRIP-aided steels with or without Zn coating increases with the increase of strain rate; and Zn coating decreases the steel's energy absorbability.