Affiliation:
1. School of Metallurgy and Material Engineering, Chongqing University of Science and Technology, Chongqing, China
2. China Coal Technology Engineering Group Chongqing Research Institute, Chongqing, China
Abstract
The microstructure and corrosion resistance of Mg-1Sc alloys in different processing conditions were investigated. The composition was examined by Inductively Coupled Plasma Atomic Emission Spectrometer, the microstructure was analyzed by metallographic microscope. The corrosion behaviour of the alloy was investigated by hydrogen evolution tests and electrochemical tests. The results showed that as-cast and rolled Mg-1Sc possess better corrosion resistance compared with extruded Mg-1Sc alloys, which is due to the fact that the extrusion flow lines and residual stresses caused by machining in extruded Mg-1Sc alloys can lead to easier corrosion. In addition, rolled Mg-1Sc alloy shows better corrosion resistance than as-cast alloy, which is attributed to the finer grain sizes and a denser corrosion product film.
Funder
Chongqing Overseas Chinese Entrepreneurship and Innovation Support Program
Chongqing Natural Science Foundation Innovation and Development Joint Fund
National Natural Science Foundation of China
Innovation Research Group of Universities in Chongqing
Chongqing Youth Expert Studio
Chongqing Science and Technology Commission