In 1882, Sir Thomas Hadfield patented an alloy with quite remarkable properties. Its composition was Fe-1.3%C-13%Mn and it was the toughest alloy known! The claim has stuck for the century since then and the alloy is now used universally for the “frog” in railway crossings in countries such as Canada where heavy loads are moved by rail using high axle loading. In fact, the alloy is very soft wh...

Deformation-induced martensitic transformation as the basis of a hardening process is dependent, among others, on stress state. In applications such cryogenic cutting, where hardened subsurface can be produced in metastable austenitic steels, different states exist. Furthermore, cutting typically occurs at high strain rates greater than 103s?1. order to gain deeper insight into behavior steel (...

Plastic pre-strains were applied to the metastable 304L austenitic stainless steel at both room temperature (20 °C) and higher temperatures (i.e., 50, 80 and 100 °C), and then the hydrogen embrittlement (HE) susceptibility of the steel was evaluated by cathodically hydrogen-charging and tensile testing. The 20 °C pre-strain greatly strengthened the steel, but simultaneously significantly increa...

The application of a bipolar electrochemistry technique to simulate the galvanic corrosion behaviour dissimilar stainless steels is introduced. allows comparison response by controlling extent localised as function an applied offset potential. setup was explored performance type 420 ferritic and 304L austenitic steels, yielding information about anodic vs. cathodic these materials when in close...

In this paper, a new technology for a novel material inherent load sensor for sheet metal components of metastable austenitic steel is presented. The new technology is based on load induced martensite formation and is investigated in the Collaborative Research Centre (CRC) 653. The sensors are small areas in the sheet metal material, which have been plastically deformed by means of stamping. Du...

A new method to calculate the plastic anisotropy r-values of austenitic and ferritic stainless steels has been developed. The mean orientation individual grains is obtained from SEM-EBSD data for are calculated by weighting all slip systems according their Schmid factors. Calculated measured in good agreement steels. However, steels, which highly anisotropic, requires introduction a factor thre...

the current work was carried out to characterize welding of aisi 310 austenitic stainless steel to inconel 657 nickel-chromium superalloy. the welds were produced using four types of filler materials; the nickel-based corresponding to inconel 82, inconel a, inconel 617 and austenitic stainless steels 310. of the two joints involved, this paper describes the choice of welding consumables for the...