Reference number : GC-2017-Q2-04343, amendment number : , agreement type : G, recipient legal name : Gerlich, Adrian (University of Waterloo), recipient country : CA, recipient province : nan, recipient city : Ontario, recipient postal code : nan, program name english : Engage Grants for Universities, program name french : Subventions d'engagement partenarial pour les universités, program purpose english : Maintaining the integrity of the oil and gas pipeline network is essential to the energy transport system in_x000D_
Canada. Much of this depends on the ability to weld many of the aging pipeline steels, which may be well over_x000D_
50 years in service. However, over this time steel making practices have changed, along with the welding_x000D_
processes which have tended to favour higher welding speeds and cooling rates for more rapid fabrication and_x000D_
lower costs. The current proposal will build a relationship between the University of Waterloo and Stantec_x000D_
Consulting Ltd. The goal will be to develop processing practices and identify the weldability limits for vintage_x000D_
pipeline steels such as X70. Since it is necessary to avoid excessive cooling rates during welding which may_x000D_
lead to formation of hard phases, it is vital to understand what welding parameters will produce weld_x000D_
microstructures with good integrity and high toughness. This will be determined by developing continuous_x000D_
cooling transformation diagrams for both vintage and modern X70 pipeline steels. Thermal cycling will be_x000D_
applied to the steels using a state-of-the-art Gleeble thermo-mechanical testing system to simulate various_x000D_
welding thermal cycles and cooling conditions, and correlate these with hardness and toughness. This will_x000D_
provide key insights in what limiting welding parameters for can be applied in the field to ensure integrity after_x000D_
in-service repair., program purpose french : Maintaining the integrity of the oil and gas pipeline network is essential to the energy transport system in_x000D_
Canada. Much of this depends on the ability to weld many of the aging pipeline steels, which may be well over_x000D_
50 years in service. However, over this time steel making practices have changed, along with the welding_x000D_
processes which have tended to favour higher welding speeds and cooling rates for more rapid fabrication and_x000D_
lower costs. The current proposal will build a relationship between the University of Waterloo and Stantec_x000D_
Consulting Ltd. The goal will be to develop processing practices and identify the weldability limits for vintage_x000D_
pipeline steels such as X70. Since it is necessary to avoid excessive cooling rates during welding which may_x000D_
lead to formation of hard phases, it is vital to understand what welding parameters will produce weld_x000D_
microstructures with good integrity and high toughness. This will be determined by developing continuous_x000D_
cooling transformation diagrams for both vintage and modern X70 pipeline steels. Thermal cycling will be_x000D_
applied to the steels using a state-of-the-art Gleeble thermo-mechanical testing system to simulate various_x000D_
welding thermal cycles and cooling conditions, and correlate these with hardness and toughness. This will_x000D_
provide key insights in what limiting welding parameters for can be applied in the field to ensure integrity after_x000D_
in-service repair., agreement title english : Evaluation of the in-service weldability of vintage and modern pipeline steels, agreement title french : Evaluation of the in-service weldability of vintage and modern pipeline steels, agreement number : EGP, agreement value : 25000.0, agreement start date : 2017-09-20, agreement end date : nan, description english : nan, description french : nan, expected results english : nan, expected results french : nan, additional information english : Grant or Award spanning more than one fiscal year (2017-2018 to 2018-2019)., additional information french : Subvention ou bourse octroyée s'appliquant à plus d'un exercice financier (2017-2018 à 2018-2019)., owner organization : nserc-crsng, owner organization title : Natural Sciences and Engineering Research Council of Canada | Conseil de recherches en sciences naturelles et en génie du Canada