公开(公告)号：US20230381845A1

公开(公告)日：2023-11-30

申请号：US17872766

申请日：2022-07-25

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Henry ZHAN ,  Congjie WANG

IPC: B21C23/00 ,  C22C23/00 ,  C22F1/06

CPC classification number: B21C23/002 ,  C22C23/00 ,  C22F1/06

Abstract: The present disclosure provides a method of forming an extruded billet from a coarse-grained magnesium alloy billet. The method includes extruding the coarse-grained magnesium alloy biller at temperatures greater than or equal to about 300° C. to less than or equal to about 360° C. to from the extruded billet. The coarse-grained magnesium alloy billet has an average grain size greater than or equal to about 800 μm, and has a low aluminum content. The coarse-grained magnesium alloy billet includes greater than or equal to about 0.5 wt. % to less than or equal to about 3 wt. % of aluminum. The extruded billet may have a plurality of twins with lenticular morphology, which occupies an area fraction greater than or equal to about 20% of a total area of the extruded billet.

公开(公告)号：US20230383385A1

公开(公告)日：2023-11-30

申请号：US17877024

申请日：2022-07-29

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Congjie WANG ,  Henry ZHAN ,  Michael J. LAUCKNER

IPC: C22C23/04 ,  C22C1/02 ,  C21D8/10 ,  C21D9/34

CPC classification number: C22C23/04 ,  C22C1/02 ,  C21D8/10 ,  C21D9/34

Abstract: 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 0.1 wt. % of the magnesium-based alloy, and a balance of magnesium (Mg). Hot-formed magnesium-based alloy components formed from such methods are also contemplated, including automotive components.

公开(公告)号：US20230243023A1

公开(公告)日：2023-08-03

申请号：US17882311

申请日：2022-08-05

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Henry ZHAN ,  Pan WANG ,  Yiwu XU ,  Devin R. HESS ,  Jinping LI

IPC: C22C21/02 ,  C22F1/043

CPC classification number: C22C21/02 ,  C22F1/043

Abstract: Aluminum alloy components may include a composition including concentrations of, in wt. %, chromium of greater than or equal 0 to less than or equal 0.3, manganese of greater than or equal 0 to less than or equal 0.4, silicon of greater than or equal 6.5 to less than or equal 9.5, magnesium of greater than or equal 0 to less than or equal 0.35, iron of greater than or equal 0.2 to less than or equal 0.4, zinc of greater than or equal 0 to less than or equal 0.15, copper of greater than or equal 0 to less than or equal 0.5, titanium of greater than or equal 0 to less than or equal 0.2, strontium of greater than or equal 0 parts per million to less than or equal 200 parts per million, and a balance being aluminum.

公开(公告)号：US20220251689A1

公开(公告)日：2022-08-11

申请号：US17577199

申请日：2022-01-17

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Henry ZHAN ,  Congjie WANG

IPC: C22C23/02

Abstract: A magnesium alloy matrix having an alloy composition including aluminum at a concentration of between 0.5 wt. % to 2.5 wt. %, manganese at a concentration of between 0.3 wt. % to 1.0 wt. %, the concentration of manganese is greater than or equal to a value of [Mn] determined by a linear function [Mn]=x[Al], where x is at least 0.6 when [Al]=0.5 and is at least 0.14 when [Al]=2.5, zinc at a concentration of between 0 wt. % to 3 wt. %, tin at a concentration of between 0 wt. % to 3 wt. %, calcium at a concentration of between 0 wt. % to 0.5%, rare earth metals at a concentration of between 0 wt. % to 5 wt. %, and a balance of the alloy composition being magnesium.

公开(公告)号：US20210172035A1

公开(公告)日：2021-06-10

申请号：US17117254

申请日：2020-12-10

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Henry ZHAN

IPC: C21D8/02 ,  C21D9/40 ,  C21D9/32 ,  C22C23/04

Abstract: Methods of making magnesium-based alloy components, such as automotive components, include treating a casting comprising a magnesium-based alloy to a first deforming process to form a preform. In one aspect, the first deforming process has a first maximum predetermined strain rate of greater than or equal to about 0.001/s to less than or equal to about 1/s in an environment having a temperature of ≥to about 250° C. to ≤to about 450° C. In another aspect, the first deforming process is cold deforming that is followed by annealing. The preform is then subjected to a second deforming process having a second maximum predetermined strain rate of ≥about 1/s to ≤about 100/s in an environment having a temperature of ≥about 150° C. to ≤about 450° C. to form the magnesium-based alloy component substantially free of cracking. A solid magnesium-based alloy component having select microstructures are also provided.

公开(公告)号：US20250154635A1

公开(公告)日：2025-05-15

申请号：US18906347

申请日：2024-10-04

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Henry ZHAN ,  Jiachen Pang ,  Michael Bugeaud

IPC: C22F1/047 ,  B22D11/00 ,  B22D11/06 ,  C22C1/02 ,  C22C1/03 ,  C22C21/08

Abstract: A method of manufacturing aluminum sheet material includes melting secondary aluminum and adding primary aluminum and other alloying elements to the melt to achieve an alloy composition of from 2.5 wt % to 6.3 wt % Mg, from 0.6 wt % to 2.5 wt % Si, from 0.2 wt % to 0.4 wt % Fe, from 0.05 wt % to 0.2 wt % Cr, up to 0.6 wt % Mn, up to 0.1 wt % Cu, up to 0.1 wt % Zn, the balance being Al and unavoidable impurities, wherein the Si and Mg contents satisfy the relationship (Si wt. %>0.5*Mg wt. %-0.65 wt. %). The alloy is then continuously cast into an aluminum sheet. Aluminum sheet material made according to the process, and an aluminum alloy adapted for the process are also disclosed.

公开(公告)号：US20230383383A1

公开(公告)日：2023-11-30

申请号：US17873740

申请日：2022-07-26

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Pan WANG ,  Henry ZHAN ,  Jianfeng WANG ,  Lepeng ZHANG

IPC: C22C21/02 ,  C22C1/02 ,  B62D29/00

CPC classification number: C22C21/02 ,  C22C1/026 ,  B62D29/008

Abstract: A vehicle including recyclable cast aluminum alloy components. The recyclable cast aluminum alloy components include a vehicle body component and a vehicle chassis component. In combination, the recyclable cast aluminum alloy components include, by mass: silicon in an amount greater than or equal to about 6% to less than or equal to about 11%, magnesium in an amount less than or equal to about 0.5%, iron in an amount greater than or equal to about 0.15% to less than or equal to about 0.25%, manganese in an amount less than or equal to about 0.3%, and greater than or equal to about 88% aluminum. A recycled aluminum alloy component may be cast from a melt of the recyclable cast aluminum alloy components. The recyclable cast aluminum alloy components account for, by mass, greater than or equal to about 70%, about 80%, or about 90% of the recycled aluminum alloy component.

公开(公告)号：US20230340646A1

公开(公告)日：2023-10-26

申请号：US17853410

申请日：2022-06-29

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Henry ZHAN ,  Zhou WANG ,  Jianfeng WANG

IPC: C22C21/02

CPC classification number: C22C21/02

Abstract: An aluminum alloy and shaped aluminum alloy parts cast therefrom. The aluminum alloy including, by mass, ≥about 6.5% to ≤about 8% silicon, ≥about 0.1% to ≤about 0.35% magnesium, ≥about 0.2% to ≤about 0.25% iron, ≥about 0.05% to ≤about 0.15% manganese, and ≥about 0.1% to ≤about 0.2% chromium. The mass percentage of iron (Fe%), the mass percentage of manganese (Mn %), and the mass percentage of chromium (Cr %) in the aluminum alloy satisfy the relationships: (i) [Mn %+(a×Cr %)]/Fe %>1, and (ii) Fe %+(b×Mn %)+(c×Cr %)>0.6%, where about 1.3≤a≤about 1.7, about 1.2≤b≤about 1.7, and about 2.5≤c≤about 2.9.

公开(公告)号：US20220380878A1

公开(公告)日：2022-12-01

申请号：US17695623

申请日：2022-03-15

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Henry ZHAN ,  Jianfeng WANG ,  Pan WANG

IPC: C22F1/04 ,  C22C21/00 ,  C22C1/02

Abstract: An alloy composition is provided. The alloy composition includes from about 0.5 wt. % to about 1.5 wt. % silicon (Si), from about 0.5 wt. % to about 1.5 wt. % magnesium (Mg), from about 0.1 wt. % to about 0.2 wt. % zirconium (Zr), from about 0.2 wt. % to about 0.4 wt. % iron (Fe), from 0 wt. % to about 0.3 wt. % chromium (Cr), from 0 wt. % to about 0.3 wt. % manganese (Mn), from about 0 wt. % to about 1 wt. % copper (Cu), from about 0 wt. % to about 0.2 wt. % titanium (Ti), from about 0 wt. % to about 1 wt. % vanadium (V), and a balance of aluminum (Al). Greater than or equal to about 60% of the alloy composition is derived from Al scrap. Methods of forming the alloy composition and methods of forming an extruded article from the composition are also provided.

公开(公告)号：US20250144704A1

公开(公告)日：2025-05-08

申请号：US18527664

申请日：2023-12-04

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Henry ZHAN ,  Congjie WANG ,  Yiwu XU ,  Collin BABIJ

IPC: B22D21/00 ,  C22C23/02

Abstract: Magnesium alloys are disclosed for diecasting with reduced defects comprising aluminum in an amount greater than or equal to about 10 wt % and less than and equal to about 15 wt %; zinc in an amount greater than 0 and less than or equal to about 0.5 wt %; silicon in an amount greater than 0 and less than or equal to about 1.5 wt %; and the balance being magnesium and unavoidable impurities. Magnesium parts diecast from these magnesium alloys are also disclosed.