Electropulsing has been imposed on molten AISI 304 stainless steel and its effects on the inclusion size and corrosion properties have been investigated. The average size of inclusions in electropulsing-treated samples was finer than that in untreated ones. A theoretical analysis shows that the mobility of solute atoms increases with electropulsing treatment. This promotes the nucleation of inclusions. Owing to a smaller inclusion size, the electrochemical experiments reveal that the pitting corrosion resistance of the electropulsing-treated stainless steel is significantly improved. The beneficial effects of electropulsing on the refinement of inclusions and the resistance to pitting corrosion increase with an increase in current density. Electropulsing treatment, therefore, provides a promising means to improve pitting corrosion resistance.
ZhaoYDongJWuYSteel corrosion and corrosion-induced cracking in recycled aggregate concrete. Corros Sci. 2014; 85:241–250.
2.
YangSMacdonaldD.Theoretical and experimental studies of the pitting of type 316L stainless steel in borate buffer solution containing nitrate ion. Electrochim Acta. 2007; 52(5):1871–1879.
PanCLiuLLiYPitting corrosion of 304ss nanocrystalline thin film. Corros Sci. 2013; 73:32–43.
5.
XuPLinCZhouCWear and corrosion resistance of laser cladding AISI 304 stainless steel/Al2O3 composite coatings. Surf Coat Technol. 2014; 238:9–14.
6.
PardoAMerinoMCoyAPitting corrosion behaviour of austenitic stainless steels – combining effects of Mn and Mo additions. Corros Sci. 2008; 50:1796–1806.
7.
KrawiecHVignalVHeintzOLocal electrochemical studies after heat treatment of stainless steel: role of induced metallurgical and surface modifications on pitting triggering. Metall Mater Trans. 2004; 35(11):3515–3521.
8.
ZhangBWangJWuBQuasi-in-situ ex-polarized TEM observation on dissolution of MnS inclusions and metastable pitting of austenitic stainless steel. Corros Sci. 2015; 100:295–305.
9.
ZhengSWangYZhangBIdentification of MnCr2O4 nano-octahedron in catalyzing pitting corrosion of austenitic stainless steels. Acta Mater. 2010; 58(15):5070–5085.
10.
HaHParkCKwonH.Effects of non-metallic inclusions on the initiation of pitting corrosion in 11% Cr ferritic stainless steel examined by micro-droplet cell. Corros Sci. 2007; 49(3):1266–1275.
11.
ZhengSLiCQiYMechanism of (Mg, Al, Ca)-oxide inclusion-induced pitting corrosion in 316L stainless steel exposed to sulphur environments containing chloride ion. Corros Sci. 2013; 67:20–31.
12.
CattantFCrussetDDamienF.Corrosion issues in nuclear industry today. Mater Today. 2008; 11(10):32–37.
13.
ZhuRWangJZhangLStress corrosion cracking of 316L HAZ for 316L stainless steel/inconel 52M dissimilar metal weld joint in simulated primary water. Corros Sci. 2016; 112:373–384.
14.
WohlschlgelMSteegmüllerRSchülerA.Effect of inclusion size and distribution on the corrosion behavior of medical-device grade nitinol tubing. J Mater Eng Perform. 2014; 23(7):2635–2640.
15.
SuterTBöhniH.A new microelectrochemical method to study pit initiation on stainless steels. Electrochim Acta. 1997; 42(42):3275–3280.
16.
JeonSKimHParkY.Effects of inclusions on the precipitation of chi phases and intergranular corrosion resistance of hyper duplex stainless steel. Corros Sci. 2014; 87:1–5.
17.
ZhangXFanLXuYEffect of aluminum on microstructure, mechanical properties and pitting corrosion resistance of ultra-pure 429 ferritic stainless steels. Mater Des. 2015; 65:682–689.
18.
WeiningSShufengYAnpingDUnderstanding the corrosion mechanism of spring steel induced by MnS inclusions with different sizes. JOM. 2018; 70(11):2513–2522.
19.
XuZLaiZChenY.Effect of electric current on the recrystallzation behavior of cold worked α-Ti. Scr Metall. 1988; 22(2):187–190.
20.
ConradHKaramNMannanSEffect of electric current pulses on the recrystallization kinetics of copper. Scr Metall. 1988; 22(2):235–243.
21.
ConradHGuoHSprecherA.Effects of electropulse duration and frequency on grain growth in Cu. Scr Metall. 1990; 24(2):359–262.
22.
HeLWangJQiJEffects of electric pulse on solidification structure of KS282 alloy. Adv Mater Res. 2007; 26–28:555–558.
23.
QinR.Electric-field-induced alignment of electrically neutral disk-like particles: modelling and calculation. Sci Rep. 2017; 7(1):8443–8449.
24.
ZhangXQinR.Electric current-driven migration of electrically neutral particles in liquids. Appl Phys Lett. 2014; 104(11):114106.
25.
WangXGuoJWangYSegregation of lead in Cu–Zn alloy under electric current pulses. Appl Phys Lett. 2006; 89(6):061910.
26.
NakadaMShilharaYFlemingsM.Effect of high density electric pulse on the as-cast structure of hypereutectic 90Sn10Pb alloy. ISIJ Int. 1990; 30(1):27–33.
27.
LiuHChenW.Effect of total oxygen content on the machinability of low carbon resulfurized free cutting steel. Steel Res Int. 2012; 83(12):1172–1179.
28.
WangYYangWZhangL.Effect of cooling rate on oxide inclusions during solidification of 304 stainless steel. Steel Res Int. 2019; 90(7):1900027.
29.
HoPWokT.Electromigration in metals. Rep Prog Phys. 1999; 52(3):301–348.
30.
KumarPHowarthJDuttaI.Electric current induced flow of liquid metals: mechanism and substrate-surface effects. J Appl Phys. 2014; 115(4):044915.
31.
LiuCChenCTuK.Electromigration in Sn–Pb solder strips as a function of alloy composition. J Appl Phys. 2000; 88(10):5703–5709.
32.
GanHTuK.Polarity effect of electromigration on kinetics of intermetallic compound formation in Pb-free solder V-groove samples. J Appl Phys. 2005; 97(6):063514.
33.
BlechI.Electromigration in thin aluminum films on titanium nitride. J Appl Phys. 1977; 48(6):2648.
34.
ConradH.Influence of an electric or magnetic field on the liquid–solid transformation in materials and on the microstructure of the solid. Mater Sci Eng A. 2000; 287(2):205–212.
35.
WangXLiuMDaiWEffect of electric current direction on the microstructural evolution and mechanical properties of a cold-rolled Cu-Zn alloy during the phase transformation induced by electric current pulses. J Mater Res. 2015; 30(16):2500–2507.
36.
ZhangZHuangM.Liquid-solid electromigration behavior of Cu/Sn-52In/Cu micro-interconnect. Acta Metall Sin. 2017; 53(5):82–90. Chinese.
37.
TuKDivisionIWatsonT.Electromigration in stressed metal thin films. Trans Tech Publ. 1993; 95–98:257–262.
