12th International Conference on Magnesium Alloys and their Applications (Mg 2021): Solidification Processing
Program Organizers: Alan Luo, Ohio State University; Mihriban Pekguleryuz, McGill University; Sean Agnew, University of Virginia; John Allison, University of Michigan; Karl Kainer; Eric Nyberg, Kaiser Aluminum Trentwood; Warren Poole, University of British Columbia; Kumar Sadayappan, CanmetMATERIALS; Bruce Williams, Canmetmaterials Natural Resources Canada; Stephen Yue, Mcgill University
Wednesday 9:50 AM
June 16, 2021
Room: Invited II
Location: Virtual
Session Chair: Jonathan Weiler, Meridian Lightweight
9:50 AM Invited
Al11Mn4 Formation during the Solidification and Heat Treatment of AZ91: Christopher Gourlay1; Jingwei Xian1; Liuqing Peng1; Guang Zeng2; Di Wang1; 1Imperial College London; 2Central South University
Manganese is commonly added to Mg-Al-based alloys to ameliorate against the negative effects of impurity Fe on corrosion, causing various AlxMny intermetallic compounds to form during solidification and/or heat treatment. Here we explore the conditions under which Al11Mn4 forms during casting and solution heat treatment of high purity AZ91 and AZ80. The crystallography of Al11Mn4 nucleation and growth are studied by EBSD and shown to be strongly linked with the formation of Al8Mn5. The intermetallic microstructures are discussed with respect to thermodynamic calculations in Thermo-Calc and Pandat.
10:20 AM Invited
MAXImolding: Vertical Semi-solid Magnesium Injection Molding Machine for Mega Volume Production: Ashley Stone1; Edo Meyer1; 1MAXImolding! Technology Germany
The four semisolid metal casting processes thixomolding, thixocasting, rheocasting and stress induced melt activation are very complex and highly maintenance intensive. The cold chamber die-casting, the hot chamber die-casting did not fulfill end user expectations for quality, energy savings, and environmental sustainability.We dedicated all our working life to solve two problems: production of high-integrity net-shape light metal parts, while reducing porosities in moldings (castings). We are fully committed to improving the non-sustainable current approach of molding - inspecting - separating and re-melting. MAXImolding Team invented and patented a new vertically oriented, environmentally friendly Semi-Solid Metal Injection Molding Machine (SSM-IMM). The Molding processing parameters are optimized without a human operator by closing a real-time x-ray feedback control loop based on parts quality indicators and proper AI algorithms. This is an intrinsically safe, energy and material efficient, environmentally sound magnesium-molding self-learning smart factory with no emissions outside of factory parameters limit.