In　order　to　solve　the　problem　of　rivet　head　tending　to　crack　in　riveting,　the　effect　of　die　forms　on　TA1　rivet　deformation　and　microstructure　was　investigated　by　experimental　method　from　macro　and　micro　aspects　in　electromagnetic　riveting.　The　results　show　that　rivet　material　axial　and　radial　flow　can　be　controlled　using　different　die　forms,　and　thus　the　distribution　of　adiabatic　shear　band　and　grains　in　two　sides　of　that　in　formed　rivet　head　can　be　changed.　With　flat　head　die,　severe　axial　and　radial　flows　result　in　the　nonuniform　deformation　and　crack　is　prone　to　produced　in　rivet　head.　The　adiabatic　shear　band　of　rivet　head　is　obvious　and　grains　in　both　sides　of　that　deform　severely.　Material　radial　flows　of　rivet　head　are　well　constrained　by　spherical　and　40(0)　head　die.　The　deformations　are　relatively　uniform　and　the　adiabatic　shear　bands　are　not　obvious.　It　is　an　effective　way　to　avoid　crack　formation　and　improve　riveting　quality　using　different　die　forms.