.png){kind=icon}
.png){kind=icon}
Return
Enhancing corrosion resistance and mechanical properties of AZ31 magnesium alloy by friction stir processing with the same speed ratio
.png){kind=icon}
PRE
AI
F
Z
刘
Y
Z
DOI：10.1016/j.jallcom.2020.154452.png)
.png){kind=icon}
Original request for help.png){kind=icon}
Share.png){kind=icon}
Save
Abstract
En 中文
Friction stir processing (FSP) using the same speed ratio was introduced as an alternative method to process AZ31 magnesium alloy sheets to enhance their corrosion performance and mechanical properties. In addition to the mechanical properties, the microstructure evolution and corrosion performance of the stirred zone (SZ) were investigated using EBSD, TEM, an electronic universal testing machine and an electrochemical workstation. In addition to being significantly finer and higher than that of the AZ31 alloy, the mean grain size and the number of beta-Al12Mg17 precipitates in the SZ, respectively, gradually increased as the processing speed increased. The homogeneity and dispersion of the beta-Al12Mg17 precipitates in the SZ increased due to a sufficient heat input caused by increasing the processing speed. In addition to slight changes in the mechanical properties, high-speed FSP, and especially FSP with a high rotation speed, obviously improved the corrosion performance of the AZ31 alloy due to the formation of homogenized and diffused distribution of beta-Al12Mg17 precipitates. The SZ obtained at 5000 rpm and 125 mm/min exhibited excellent corrosion resistance. The corrosion potential of the SZ increased from -1.563 V to -1.230 V, and the corrosion current reduced from 1.55 x 10(-4) A to 2.87 x 10 (5 )A compared to those of the as-received AZ31 alloy. (C) 2020 Elsevier B.V. All rights reserved.
Keywords:
AZ31 alloy
FSP
Microstructure evolution
Precipitates
Corrosion performance
Mechanical properties
AI Summary
Key information extracted from the uploaded paper, including a brief overview, abstract, background, key highlights, visual analysis, and future outlook.
Journal
IF:
6.3
Papers:
8.3W
Citations:
24.3W
Organization
Cited Papers