Materials resistance to edge fracture in intricate shape forming is commonly quantified by
hole expansion ratio (HER). Hole expansion test is normally used to evaluate HER. To date …

Shearing processes of high strength steel sheets increasingly applied to lightweight
automobile parts were reviewed. With the increase in strength of the high strength steel …

The role of microstructural damage in controlling the edge stretchability of Complex-Phase
(CP) and Dual-Phase (DP) steels was evaluated using hole tension experiments. The …

A systematic investigation is performed to quantify the change in ductility during a single
pulse electric-assisted test in a commercial dual-phase (DP) steel. The tests were performed …

The hole expansion formability of W-tempered aluminum 7075 sheet, which is prepared by
solution heat treatment and rapid cooling, is investigated comparatively with the peak aged …

A hybrid experimental-numerical procedure was implemented to determine the failure
surface of a dual-phase 780 steel sheet as a function of the effective plastic strain, triaxiality …

Global formability and local formability are critical in different metal forming processes. Edge
cracking, controlled by the local formability, is a dominant factor limiting the application of …

The influence of microstructure and stress state, as defined by the stress triaxiality and Lode
parameter, on micro-void nucleation was evaluated experimentally for two 800 MPa …

Industrial servo presses have been used to successfully demonstrate improved formability
when deforming sheet metals. While the time dependent viscoplastic behavior of material is …

This study was performed to estimate the stretch-flangeability of two important advanced
high strength steel (AHSS) sheets, ie DP980 and TRIP1180, using hole-expansion test …