真空热轧法制备不锈钢复合板组织和力学性能
发布时间：2018-10-24 11:31
【摘要】：为了研究轧制温度对复合板界面结合强度的影响,采用真空热轧法制备了不锈钢复合板,利用OM、EPMA观察分析了不锈钢复合板界面组织和合金元素扩散。结果表明,碳钢中碳、铁元素向不锈钢扩散,不锈钢中铬、镍等元素向碳钢扩散,界面处出现Si-Mn-O三元化合物,合金元素扩散随轧制温度的升高而趋于严重。远离界面碳钢的组织为铁素体和珠光体组织,靠近界面碳钢的组织为铁素体组织。碳钢至界面处硬度先减小后升高,界面至不锈钢内部硬度先升高后下降,距界面约40μm碳钢侧的维氏硬度值最低约为121.8HV,距界面约20μm不锈钢侧的维氏硬度值最高约为245.5HV。从1 100到1 300℃,剪切强度随轧制温度的升高而升高,1 300℃轧制获得的界面剪切强度为463 MPa,远远超过基体的剪切强度。
[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，
本文编号：2291279
[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，
本文编号：2291279
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