【摘要】：為了研究軋制溫度對復(fù)合板界面結(jié)合強(qiáng)度的影響,采用真空熱軋法制備了不銹鋼復(fù)合板,利用OM、EPMA觀察分析了不銹鋼復(fù)合板界面組織和合金元素?cái)U(kuò)散。結(jié)果表明,碳鋼中碳、鐵元素向不銹鋼擴(kuò)散,不銹鋼中鉻、鎳等元素向碳鋼擴(kuò)散,界面處出現(xiàn)Si-Mn-O三元化合物,合金元素?cái)U(kuò)散隨軋制溫度的升高而趨于嚴(yán)重。遠(yuǎn)離界面碳鋼的組織為鐵素體和珠光體組織,靠近界面碳鋼的組織為鐵素體組織。碳鋼至界面處硬度先減小后升高,界面至不銹鋼內(nèi)部硬度先升高后下降,距界面約40μm碳鋼側(cè)的維氏硬度值最低約為121.8HV,距界面約20μm不銹鋼側(cè)的維氏硬度值最高約為245.5HV。從1 100到1 300℃,剪切強(qiáng)度隨軋制溫度的升高而升高,1 300℃軋制獲得的界面剪切強(qiáng)度為463 MPa,遠(yuǎn)遠(yuǎn)超過基體的剪切強(qiáng)度。
[Abstract]:In order to study the effect of rolling temperature on the interfacial bonding strength of stainless steel clad plate, stainless steel clad plate was prepared by vacuum hot rolling method. The interface microstructure and alloy element diffusion of stainless steel clad plate were observed and analyzed by OM,EPMA. The results showed that carbon and iron diffused into stainless steel, chromium and nickel in stainless steel diffused to carbon steel, and Si-Mn-O ternary compounds appeared at the interface. The diffusion of alloy elements tended to be serious with the increase of rolling temperature. The microstructure of carbon steel far away from the interface is ferrite and pearlite, while that of carbon steel near interface is ferrite. The hardness of carbon steel to the interface decreases first and then increases, and then decreases from the interface to the stainless steel. The minimum Vickers hardness is 121.8 HVV on the side of 40 渭 m carbon steel from the interface, and the highest Vickers hardness is about 245.5 HV on the stainless steel side of about 20 渭 m from the interface. From 1 100 鈩，

本文編號(hào)：2291279