CREEP PROPERTIES OF T92/HR3C WELDED JOINTS 87 (b) (c) 少了m austenite T92 HAZ HR3C HAZ 0 1cm 2 Fig. 4 Metallographic microstructures of the five different regions across the welded joint(a)T92 base material, (b) HAZ of T92, (c) boundary between HAZ of T92 and weld seam, (d)weld seam, (e) boundary between weld seam and HAZ of HR3C,(D) HAZ of HR3C, (g) HR3C base material, (h)schematic diagram of welded joint @2010 Blackwell Publishing Ltd Fatigue Fract Engng Mater Struct 34, 83-96C R E E P P RO P E RTI E S O F T 9 2/H R 3 C W E LD ED JOINT S 87 Fig. 4 Metallographic microstructures of the five different regions across the welded joint (a) T92 base material, (b) HAZ of T92, (c) boundary between HAZ of T92 and weld seam, (d) weld seam, (e) boundary between weld seam and HAZ of HR3C, (f) HAZ of HR3C, (g) HR3C base material, (h) schematic diagram of welded joint. c 2010 Blackwell Publishing Ltd. Fatigue Fract Engng Mater Struct 34, 83–96