7075厚板铝合金搅拌摩擦焊接头晶间腐蚀行为研究
刘德强1,2,柯黎明1,3(),徐卫平1,邢丽1,毛育青3
Intergranular Corrosion Behavior of Friction-stir Welding Joint for 20 mm Thick Plate of 7075 Al-alloy
Deqiang LIU1,2,Liming KE1,3(),Weiping XU1,Li XING1,Yuqing MAO3

图4. 3#试样各区晶间腐蚀显微形貌

Fig.4. Intergranular corrosion microstructures of different zones of 3# sample: (a) NZ, (b, c) magnified images of areas A and B in Fig.4a and Fig.4c, respectively; (d) HAZ, (e, f) magnified images of areas C and D in Fig.4d and Fig.4e, respectively; (g) TMAZ, (h, i) magnified images of the areas E and F in Fig.4g and Fig.4h, respectively