不锈钢/碳钢的高频感应钎焊工艺及性能研究
Study on Process and Microstructure of Carbon Steel / Stainless Steel Composite Plate by High-frequency Induction Brazing
王小霞， 丁 毅， 朱 婧， 马立群
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作者单位：南京工业大学 材料科学与工程学院， 江苏 南京 210009)
中文关键字：不锈钢/碳钢复合板； 高频感应钎焊； 黄铜
英文关键字：carbon steel/stainless steel composite plate; high-frequency introduction brazing; H62 brass
中文摘要：采用高频感应钎焊技术制备不锈钢/碳钢复合板，研究了温度和时间对焊接接头的组织和抗剪强度的影响。结果表明，钎焊温度950 ℃，保温5 min得到的钎焊效果最好，且在钎焊层中存在Fe、Cr、Ni、Cu、Zn元素的扩散现象，并在钎焊层中形成岛状物相，该岛状物相优先在碳钢/黄铜界面形成，随着钎焊温度的升高向钎焊层中生长，直至贯穿整个钎焊层；随着温度的升高和时间的延长，岛状物数量增多，使结合区硬度和抗剪强度提高。
英文摘要：The low-carbon steel/stainless steel clad plate was prepared by high-frequency induction brazing technology and the effects of brazing temperature on the microstructure and shear strength of welded joint were studied. The results show that when the temperature is 950 ℃, time is 5 min, the shear strength reaches the maximum. The diffusion of Fe, Cr,Ni, Cu, Zn is observed in bonding zone and island-form phase is formed in the filler metal. This island-shape phase forms in the interface of low-carbon steel/brass, then increase with the increase of brazing temperature and goes through the filler metal layer at last, lead to the improvement of shear strength.