EffectsofaddingLa-richmischmetalonthemicrostructureandmechanicalpropertiesofhotextrudedMg-8Alalloys；Effectsofextrusionconditionsonhotextrudingcharacteristicsofmagnesiumalloy；Expertevaluationofhydraulicpressreliability；ExtrudabilityimprovementandenergyconsumptionestimationinAIextrusionprocessofa7003alloy;Fabricationofcompositepipesbymulti-billetextrusiontechnique
