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采用真空电子束焊接、界面四周焊合抽真空和界面四周焊合3种工艺制备不锈钢/碳钢复合板坯并热轧,研究了不同制坯工艺下复合板复合界面的组织结构及其性能。结果表明,利用真空电子束焊接和界面四周焊合抽真空两种方式制备的复合板坯经热轧后能100%复合,而通过界面四周焊合方式制备的复合板坯在热轧后界面结合率较低。对3种工艺下成功复合的部位,其复合界面形貌相似,即界面都较平直,且都存在不锈钢、碳钢和复合层3个区域以及近复合层碳钢内的脱碳区,靠近不锈钢侧也都间断分布着Si-Mn等的氧化物。真空电子束焊接和界面四周焊合抽真空两种方式制备的坯料在热轧后碳钢与不锈钢之间都实现了较高强度的复合,并且真空电子束焊接坯料热轧复合板的强度值都略高于界面四周焊合抽真空复合板的。
Vacuum electron beam welding, welding and vacuum welding around the interface and welding around the interface were used to prepare stainless steel / carbon steel composite slabs and hot rolled. The microstructure and properties of the composite interface of the composite slab under different blank manufacturing processes were studied. The results show that the composite slabs made by vacuum electron beam welding and vacuum welding around the interface can be 100% compounded by hot rolling, while the composite slabs prepared by welding around the interface are bonded after hot rolling Lower rate. For the three composite layers, the composite interface morphology is similar, that is, the interface is relatively flat, and there are three regions of stainless steel, carbon steel and composite layer and the decarburization area near the composite layer of carbon steel, close to On the stainless steel side, oxides such as Si-Mn are also intermittently distributed. Vacuum electron beam welding and welding around the interface welding vacuum billets prepared in both ways after the hot-rolled carbon steel and stainless steel have achieved a high strength composite, and vacuum electron beam welding billet hot rolled composite plate strength values are Slightly higher than the interface around the welding vacuum composite panels.