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

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 + aged at 725°C	100	0.053818	−0.110000	0.163818	1.6857088	5.767805
	316	0.052163	−0.119650	0.171813	1.7231466	6.484404
	1000	0.060101	−0.103310	0.163411	22.5825614	53.421053
	3162	0.050114	−0.117800	0.167914	50.5214698	93.189389
	10000	0.063035	−0.108430	0,171465	50.4425582	90.422059
	31622	0.064701	−0.095247	0.159948	64.3463484	92.394528