A new type of hybrid welding method called resistance plug welding( RPW) was firstly adopted to achieve the connecting of dissimilar steel,mainly as for the poor welding characteristics of high strength steel produced by increasing carbon,manganese, silicon, etc. Microstructures and mechanical properties of RPW joint were analyzed by optical microscope,micro-hardness test and shear tensile measurement. Experimental results indicate that the RPW joint has a rounded rectangle nugget,and the size is larger than elliptical nugget of resistance spot welding( RSW) joint; the hardness value of RPW joint is evenly distributed,accordingly there is no hard brittle phases; the shear tensile strength of RPW joint increases by 20% in comparison with RSW joint under the same welding conditions.
展开▼
机译:Microstructural evolution and mechanical properties of FeCoCrNiCu high entropy alloys:a microstructure-based constitutive model and a molecular dynamics simulation study
机译:Etude du Comportement micro-mecanique d'Une Vitroceramique a subst de siO2-al2O3-Li2O en Liaison avec la microstructure(siO2-al2O3-Li2O玻璃陶瓷的微观力学行为及其与微结构的关系研究)