Determination of Susceptibility to Intergranular Corrosion of UNS 31803 Type Duplex Stainless Steel by Electrochemical Reactivation Method: A Comparative Study

Table 6

DLEPR test results on the reverse scans of polarization curves.

Temperature; (°C)	Time; (min)	𝐸3; (volt)	𝐸4; (volt)	Δ𝐸=(𝐸3−𝐸4); (volt)	𝐼𝑟; (mA/cm^2)	DOS (𝐼𝑟/𝐼𝑎×100)
Solution annealed at 1050°C, 1 hr		0.02521	−0.190090	0.215300	0.0063918	0.027634
Solution annealed at 1050°C, 1 hr, then aged at 800°C	100	0.045932	−0.15449	0.200422	0.4984463	1.999934
	316	0.045098	−0.15130	0.196398	6.9135766	17.617832
	1000	0.050937	−0.13741	0.188347	14.1895596	31.677025
	3162	0.046346	−0.14173	0.188076	6.68075480	15.680025
	10000	0.048046	−0.12440	0.172446	35.3551309	61.015094
	31622	0.070888	−0.13465	0.205538	25.5835940	36.827603