Development of automotive and aerospace alloys based on light metals

轻合金（Mg, Al）在运输应用（汽车，航空航天）中具有重要的战略意义，可以减轻重量，减少温室气体（GHG）排放，提高燃油经济性和性能。目前，交通运输部门不断增长的二氧化碳排放量占加拿大温室气体排放总量的25%，政府的目标是到2050年减少45-65%的温室气体。汽车行业的长期目标是减轻汽车重量，以实现燃油经济性、性能和减少排放，这些目标需要与成本目标和可靠性相平衡。镁和铝提供了有吸引力的减肥机会。

Light alloys (Mg, Al) are of strategic importance in transport applications (automotive, aerospace) for weight reduction leading to reduced greenhouse-gas (GHG) emissions, fuel economy and improved performance. The growing CO2 emissions from the transportation sector currently contribute 25% of Canada's total greenhouse gas (GHG) emissions and the government has targeted a 45-65%reduction in GHGs by 2050. The automotive industry has long-term goals in vehicle-weight reduction for fuel economy, performance and reduced emissions, which need to be balanced with cost targets and reliability. Magnesium and aluminum offer attractive weight-reduction opportunities. The current interest in light alloys is diversified. Automakers wish to push the limits of Mg and Al alloys to be able to achieve weight reduction in strategic engine and body applications. Aircraft manufacturers aim at the potential use of magnesium in the long term for airframeand cabin components to improve the performance, load capacity and fuel economy of the carriers. In the field of aluminum, the research needs for the automotive industry are more specific. New alloys with improved high-temperature performance are needed for use in the diesel engine. This requires the development Al alloys with improved creep and elevated temperature strength. In this research program, creep resistance of Mg will be improved to meet the requiremnts of the automotive engine; a systematic program will be undertaken to develop Mg wrought alloys with improved room temperature formability for automotive body applications; and ignition resistance of Mg will be improved for aerospace applications which would lead to policy changes in the use of Mg alloys for aircraft cabin applications. At the same time novel Al alloys which can withstand the diesel engine-block service conditions will be developed.