DD407/IN718高温合金异质焊接接头的组织及高温变形行为
刘杨,王磊(
),宋秀,梁涛沙
),宋秀,梁涛沙
Microstructure and High-Temperature Deformation Behavior of Dissimilar Superalloy Welded Joint of DD407/IN718
LIU Yang,WANG Lei(),SONG Xiu,LIANG Taosha
),SONG Xiu,LIANG Taosha
图3. DD407/IN718合金激光焊接接头(聚焦镜焦距250 mm，离焦量-8 mm，焊接功率1600 W，焊接速率2.1 mm/min)的焊接态显微组织
Fig.3. Microstructures of laser welded DD407/IN718 joint (Focus lens is 250 mm, defocus is -8 mm, welding power is 1600 W, welding speed is 2.1 mm/min. HAZDD407—heat-affected zone at DD407 side, HAZIN718—heat-affected zone at IN718 side)(a) microstructure of HAZDD407 (b) overall view (c) microstructure of HAZIN718 (d) γ' of BMDD407(e) microstructure of FZ (f) Laves phase on the boundary liquation in the HAZIN718(g) γ' of HAZDD407 near BMDD407 (h) dendrite structure of position for I zone in Fig.3b(i) γ' of HAZDD407 near FZ (j) dendrite structure of position for II zone in Fig.3b
