形成具有双峰显微组织的基于镁的合金的方法和由其制成的基于镁的合金部件

• Format: Patent
• Language: Chinese
• Published: 08.12.2023
• Subjects: ALLOYS; AXLES FOR WHEELS OR CASTORS; CASTORS; CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS ANDNON-FERROUS ALLOYS; CHEMISTRY; FERROUS OR NON-FERROUS ALLOYS; INCREASING WHEEL ADHESION; METALLURGY; PERFORMING OPERATIONS; TRANSPORTING; TREATMENT OF ALLOYS OR NON-FERROUS METALS; VEHICLE WHEELS; VEHICLES IN GENERAL

本发明提供了形成具有双峰显微组织的基于镁的合金的方法和由其制成的基于镁的合金部件。提供了制造基于镁的合金部件的方法。使具有分布在镁合金基体中的多个富锆畴的基于镁的合金的预制件经受≥约360℃的温度和变形工艺，其促进选择性动态再结晶的，以在具有分布在包含动态再结晶晶粒的基体中的多个未再结晶区域的基于镁的合金部件中产生双峰显微组织。基于镁的合金包含基于镁的合金的≥约2重量%至≤约4重量%的锌(Zn)、基于镁的合金的≥约0.62重量%至≤约1重量%的锆(Zr)、基于镁的合金的≤约0.1重量%的总杂质，以及余量的镁(Mg)。还考虑了由这些方法形成的热成形的基于镁的合金部件，包括汽车部件。 Methods of making magnesium-based alloy components are provided. A preform of a magnesium-based alloy having a plurality of zirconium-rich domains distributed in a magnesium-alloy matrix is subjected to a temperature of ≥ about 360° C. and a deformation process that facilitates selective dynamic recrystallization to create a bimodal microstructure in the magnesium-based alloy component having a plurality of un-recrystallized regions distributed in a matrix comprising dynamically recrystallized grains. The magnesium-based alloy includes zinc (Zn) at ≥ about 2 to ≤ about 4 wt. % of the magnesium-based alloy, zirconium (Zr) at ≥ about 0.62 wt. % to ≤ about 1 wt. % of the magnesium-based alloy, total impurities at ≤ about 0.