Seen from Figure 2, 3, and Table 2, the different temperature heat treatment of 10h Alloy 690 specimen resistance to intergranular corrosion rising rapidly with increasing heat treatment temperature (ra ratio of the rapid decline) to 715 ° C heat treatment temperature of 690 The corrosion resistance

From Figure 2, 3, and table 2 show that different heat treatment temperature limitations of the 10 H of the sample of 690 alloy corrosion resistance with crystal-an increase of the temperature heat treatment (Ra ratio rose rapidly declining rapidly) to 715 degrees, heat-treated at temperatures of C

From Figure 2, 3 and Table 2 obviously, the different temperature effectiveness heat treatment 10h 690 alloy test specimen bears the intercrystalline corrosion performance along with the heat treatment temperature ascension rapid rise (Ra ratio rapid drop), to 715℃ heat treatment temperature when 69

From Figure 2, and 3 and table 2 visible, different temperature limitation heat treatment 10h of 690 alloy specimen of resistance Crystal between corrosion performance as heat treatment temperature of rise quickly rose (Ra ratio quickly declined), to 715 ℃ of heat treatment temperature Shi 690 alloy