John G. Speer

TL;DR: The concept of employing martensitic microstructures containing controlled quantities of carbon enriched retained austenite as a new route to high tonnage steels with improved properties is developed through an introduction to the novel non-equilibrium heat treatment procedure which has become known as quenching and partitioning (Q&P) as mentioned in this paper.

TL;DR: In this article, dynamic mechanical properties of low carbon TRIP steels with varying retained austenite stabilities were evaluated over a wide range of strain rates using a high-velocity hydraulic tensile testing machine.

TL;DR: In this article, the influence of low-strain deformation behavior on curl and springback in advanced high strength steels (AHSS) was assessed using a bend-under-tension test.

TL;DR: In this paper, the authors proposed an approach to predict shear fractures by instability at die radii, represented by maximum applied tensile force as a function of die radius. And they found that the critical radius (normalized by sheet thickness: R / t crit ), above which materials will fail in tension, independent of the die radius, and correspondingly localized shear fracture would not occur.

TL;DR: In this article, a difference in static strain aging was observed between unstrained and prestrained low-alloy multiphase transformation-induced-plasticity (TRIP) steel.