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采用钨极气体保护焊,以基体金属作为焊接填料,可以成功实现对高硼Fe-Ti-B合金的焊接。对焊件的微观结构进行了分析,研究表明,高硼Fe-Ti-B合金的焊接质量良好,焊接接头处不存在裂纹、未熔合、未焊透等缺陷;熔合区和热影响区的微观结构与基体明显不同,但能谱分析表明其化学成分非常均匀。对焊件进行了力学性能测试。测试结果表明,相对于基体材料,焊件的屈服强度略有升高,但抗拉强度降低。尽管如此,焊后高硼Fe-Ti-B合金的抗拉强度高于580 MPa,屈服强度高于400 MPa,焊件的力学性能已达到一个较高的水平。
Using tungsten gas shielded welding, the base metal as a welding filler, you can successfully achieve the high boron Fe-Ti-B alloy welding. The microstructure of the weldment is analyzed. The results show that the welding quality of the high-boron Fe-Ti-B alloy is good, and there are no defects such as cracks, unfused and incomplete penetration in the weld joint. The microstructure of the weld zone and the heat affected zone The structure and substrate are obviously different, but the energy spectrum analysis shows that its chemical composition is very uniform. The weldment was tested for its mechanical properties. The test results show that the yield strength of the weldment slightly increases relative to the base material, but the tensile strength decreases. Nevertheless, the tensile strength of the welded boron-added Fe-Ti-B alloy is higher than 580 MPa and the yield strength is higher than 400 MPa. The mechanical properties of the weldment have reached a high level.