Material composition and structure optimization for sinter-brazing ferrous powder metallurgy components
HUANG Yongqiang 1，SHEN Xiaoping 2，KANG Limei 1
（1.Guangzhou Rall Wall Polytechnic, Guangzhou 510430, China; 2. Engineering Training Center, Nanjing
University of Science and Technology, Nanjing 210094,
Abstract：Excellent welding performance depends on the base material composition, solder composition and
weld structure. The optimal combination group of base metal with Fe-3.5%Ni-0.5%Mo-2.5%Cu-0.7%C and filler
metal with Cu-32%Ni-18%Mn-1.5%B-2%Si-3%Fe was obtained by orthogonal experiment. The structure of the
welding joint is optimized to achieve the maximum welding strength of 84 MPa when the weld depth is 0.3 mm.
In addition, the connection mechanism of the welding area is studied from a microscopic perspective through
pore distribution and metallographic analysis.
2023, Vol. 33 
