The Thermal Stability of Quenched and Partitioned Steel Microstructures

The quenching and partitioning (Q&P) process is a heat treatment process, aiming at the creation of steel microstructures composed of martensite and retained austenite. Herein, the thermal stability of the microstructure is investigated upon reheating steel microstructures, created with different Q&P settings, in different thermal...

Micromechanisms of Failure under Static Loading in Sheet Metals for Automotive Applications

Crystalline damage development during martensitic transformations

A recently developed thermo-mechanical model [1] is presented that can be used to simulate the interactions between martensitic phase transformations and crystalline damage growth at the austenitic grain level. Subgrain information is included in the model via the crystallographic theory of martensitic transformations, see also [2,3]. The state...

Crystalline damage development during martensitic transformations

A recently developed thermo-mechanical model [1] is presented that can be used to simulate the interactions between martensitic phase transformations and crystalline damage growth at the austenitic grain level. Subgrain information is included in the model via the crystallographic theory of martensitic transformations, see also [2,3]. The state...

Thermo-mechanical loading response of hardened and tempered iron-carbon based alloys

The mechanisms causing long term changes of materials at mild operating conditions, i.e. relatively low temperatures and loads, has not received as much attention as that for high temperature operating conditions because small strains are involved. Nevertheless the thermo-mechanical loading response of materials used for high precision...

An acoustic emission study of martensitic and bainitic transformations in carbon steel

Steel is one of the most commonly used materials today, especially in industrial sectors such as ship building and the automotive industry. In order to meet the requirements for steel applications, new multi-phase steels are being developed. The microstructure of these steels consists of a variety of different phases, which leads to superior...