Effect of heat treatment on microstructure evolution and erosion–corrosion behavior of a nickel–aluminum bronze alloy in chloride solution

2015 ◽  
Vol 98 ◽  
pp. 260-270 ◽  
Author(s):  
Zhong Wu ◽  
Y. Frank Cheng ◽  
Lei Liu ◽  
Weijie Lv ◽  
Wenbin Hu
2011 ◽  
Vol 02 (11) ◽  
pp. 1542-1555 ◽  
Author(s):  
Ashkan Vakilipour Takaloo ◽  
Mohammad Reza Daroonparvar ◽  
Mehdi Mazar Atabaki ◽  
Kamran Mokhtar

2014 ◽  
Vol 60 ◽  
pp. 233-243 ◽  
Author(s):  
J. Anantapong ◽  
V. Uthaisangsuk ◽  
S. Suranuntchai ◽  
A. Manonukul

2021 ◽  
Vol 2 (1) ◽  
pp. 61-77
Author(s):  
Hamid Reza Jafari ◽  
Ali Davoodi ◽  
Saman Hosseinpour

In this work, the corrosion behavior and surface reactivity of as-cast and heat-treated nickel aluminum bronze casting alloy (UNS C95800) in 3.5 wt% NaCl solution is investigated under stagnant and flow conditions. Increasing flow rate conditions are simulated using a rotating disk electrode from 0 to 9000 revolutions per minute (rpm). Optical micrographs confirm the decrease in the phase fraction of corrosion-sensitive β phase in the microstructure of C95800 after annealing, which, in turn, enhances the corrosion resistance of the alloy. Electrochemical studies including open circuit potentiometry, potentiodynamic polarization, and electrochemical impedance spectroscopy are performed to assess the effect of flow rate and heat treatment on the corrosion of samples at 25 and 40 °C in 3.5 wt% NaCl solution. For both as-cast and heat-treated samples, increasing the flow rate (i.e., electrode rotating rate) linearly reduces the corrosion resistance, indicating that the metal dissolution rate is significantly affected by hydrodynamic flow. Increasing the solution temperature negatively impacts the corrosion behavior of the as-cast and heat-treated samples at all flow conditions.


2018 ◽  
Vol 138 ◽  
pp. 8-19 ◽  
Author(s):  
Qin Luo ◽  
Zhenbo Qin ◽  
Zhong Wu ◽  
Bin Shen ◽  
Lei Liu ◽  
...  

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