Influence of TiX (X=B2 or N) addition on the interfacial microstructure features of CBN grains and AgCuTi composite filler

Abstract

DING 丁丁丁 Wenfeng( ): Assoc. Prof.; Ph D;Abstract: Joining experiments of CBN grains to AISI 1045 steel were conducted using Ag-Cu-Ti composite fillers containing TiX (X＝B 2 or N) particles at 920 ℃ for 5 min. The influences of TiB 2 and TiN particles on the interfacial microstructure features between CBN and filler were investigated comparatively. The experimental results show that TiN particles are more effective than TiB 2 ones to control the interfacial reaction and particularly the resultants. Thermodynamic analysis reveals that the varied interfacial reaction induced by the addition of TiB 2 and TiN particles is mainly atttributed to the activity change of the B and Ti elements in the brazing reaction system.

Effect of aging temperature on the microstructure and properties of alloyed high‐manganese steel

“…The generation and growth of pearlite and carbide cause the fracture shape to change from equiaxed tough nests to icing sugar shape, and also damage the tensile strength and plasticity of alloyed high manganese steel, Figure 5. These findings are consistent with the results of others [22,23].…”

“…While the maximum and minimum elongation are 52.8 %, and 10.5 %, respectively, Figure 5b. When compared to 120Mn13 steel, all mechanical properties of the alloy steel are improved at a given aging temperature [22].…”

Microstructure and mechanical properties of Si3N4/42CrMo joints brazed with TiNp modified active filler

“…As TiN includes the nonstoichiometric composition in a broad range, Ti will diffuse towards and dissolve into TiNp to form hypostoichiometric TiN 1À x , which are the metallic bonds that are considered to be of lower bond energy than the covalent bonds [20]. Therefore, TiNp was easily wet by the melted Ag-Cu-Ti alloy and trapped some amount of Ti elements in the brazing alloy.…”