Subventions et des contributions :

Subvention ou bourse octroyée s'appliquant à plus d'un exercice financier (2017-2018 à 2018-2019).

Stelco Canada is one of the top steel producers in North America, which operates the most modern greenfieldx000D
integrated steel making facility on the continent. Recently re-established as an independent Canadianx000D
company, Stelco employs more than 2,200 personnel and produces a variety of steels for the automotive,x000D
energy and construction sectors.x000D
Recently, Stelco produced a hot rolled coil of a High Strength Low Alloy (HSLA) steel for a customer thatx000D
intended to use the material to construct vehicle impact barriers (guard rails). The material needed to meet ax000D
demanding Drop Weight Tear Test (DWTT) specification at low temperatures. The coil was produced using ax000D
coiling temperature of 550 degC, but did not meet the DWTT specification and resulted in a loss for Stelco. Ax000D
second coil was produced using a coiling temperature to 500 degC, which met the DWTT specification, butx000D
with mixed results. The effect of the coiling temperature on the (i) microstructure (ii) low temperature DWTTx000D
performance and (iii) sporadic DWTT results for this grade of HSLA steel is not well understood, and formsx000D
the basis of the proposed research. High resolution optical and field emission scanning electron microscopyx000D
will be used to quantify the effect of coiling temperature on the microstructure and damage evolution for thex000D
DWTT tested HSLA materials. The results will provide Stelco insight into the effect of coiling temperature onx000D
low temperature DWTT performance of HSLA (and similar) steel grades and benefit the company by reducingx000D
customer coil rejections.x000D
Another problem faced by Stelco is associated with the DWTT test itself and how testing parameters (couponx000D
thickness, notch type, test energy and shear measurement) affect the results. A parametric DWTT study will bex000D
conducted at Stelco's R&D facility to better understand the test and standardize their testing procedure.