rexresearch
Xiaomi
Aluminum Heat Treatment
https://www.evworld.com/article.php?id=651&slug=disposal-evs-xiaomis-aluminum-replacement-isnt-what-you-think
Disposal EVs? Xiaomi's "Aluminum Replacement" Isn't What You Think
...The alloy that did not replace aluminum, but replaced heat treatment. The video at the center of this discussion claims Xiaomi invented a new metal that makes aluminum obsolete. In fact, Xiaomi still relies heavily on aluminum, but in a proprietary form known as Xiaomi Titans Metal (sometimes called Xiaomi Titan Alloy).
The real breakthrough is not elemental chemistry but process engineering. Conventional aluminum castings require long, energy-intensive heat treatment to reach structural strength. Xiaomi's R&D team used an AI-driven "Material Genome" approach to simulate more than 10 million alloy formulas and selected one that achieves high strength without heat treatment. The result is a casting alloy that is reported to be about 17% lighter while skipping a slow, expensive production step.
Where the video comes closer to reality is in its description of Xiaomi's 9100-ton "Hypercasting" cluster. This system replaces roughly 72 stamped and welded components with a single integrated die-cast rear structure. Tesla pioneered this idea with its Gigacasting, but Xiaomi's 2026 implementation uses higher clamping force and a more complex integration of functions into one casting.
The 2026 branding in the video title refers to the refreshed Xiaomi SU7 and SU7 Ultra built in a highly automated "Hyperfactory." Xiaomi claims this plant can produce one car approximately every 76 seconds, with individual chassis sections cast in about 100 seconds. For a high-performance EV priced in the roughly $30,000–$45,000 range, that level of throughput gives Xiaomi a cost-per-unit advantage that legacy automakers will struggle to match without massive retooling.
The economic consequences of this technology are profound and not all positive.
On the production side, eliminating hundreds of welds and dozens of separate parts reduces labor, factory floor space, and cycle time. That is how Xiaomi can offer strong performance and advanced chassis tech at prices that undercut many Western and Japanese competitors.
On the repair side, the story flips. Because the rear chassis is a single, massive casting, even a moderate rear-end collision can render the car a total loss. The structure cannot be easily straightened, sectioned, or replaced in modules. Insurers in 2026 are already responding with higher premiums for hypercast vehicles, echoing similar concerns seen with Tesla's large castings.
Critics warn that this could distort the used EV market: vehicles that are brilliant when new may have little or no resale value if their structural "spine" is damaged or simply deemed uneconomical to repair...
https://www.youtube.com/watch?v=-zLQWH2B1Po
China's INSANE Technology Just Replaced Aluminum! XIAOMI CHASSIS 2026
A company that started by selling smartphones, air fryers, and electric scooters just walked into the automotive world and out-engineered some of the most legendary names in the business. Xiaomi built a car that laps the Nürburgring faster than a Porsche, sits stiffer than a Bugatti, and manufactures a full chassis section in 100 seconds flat. They did it by throwing out 100 years of car-making rules, using AI to invent a brand new metal, printing entire car sections as a single piece, and turning the battery itself into the skeleton of the car. This is the full story of how a phone company changed car manufacturing forever... Xiaomi SU7 Ultra lapped the Nürburgring in 6 minutes 46 seconds... Titans Metal was designed by AI after testing 10,160,000 alloy combinations ... 72 stamped parts replaced by 1 single casting ... 840 weld points reduced to zero ... Battery pack and floor combined thickness of just 120mm ... Torsional stiffness of 51,000 Nm/degree, twice that of a Ford F-150 Raptor ... HyperEngine motors spin at 27,200 RPM, a world record... Total output of 1,548 horsepower from 3 motors
https://www.nature.com/articles/s41524-026-02010-3
npj Computational Materials volume 12, Article number: 140 (2026)
Computational Materials volume 12, Article number: 140 (2026)
Ultra-fast design and application of non-heat-treatable integrated die casting aluminum alloys
Dong Yang, Junying Min, Wang Yi, Jianbao Gao, Tianchuang Gao, Qiu Ma, Xinxing Wu, Daxiu Jiang, Pingwei Liao & Lijun Zhang
Abstract -- As the die casting technique has been gradually applied to the preparation of large, complex, and integrated structural parts, there is an urgent need for non-heat-treatable aluminum alloys with superior comprehensive properties. Traditionally, the development cycle of new alloys requires 5 to 10 years using conventional experimental approaches from compositional design to industrial application. With the implementation of the Materials Genome Initiative, computation-driven design methods have substantially improved development efficiency, halving the required timeframe. However, such methods still fall short in enabling rapid product iteration and application. In this study, a multi-objective, layer-by-layer alloy screening strategy under an iterative learning framework was established to accelerate the development of novel non-heat-treatable die casting aluminum alloys with superb mechanical properties. Within 5 months, a novel alloy with ultimate tensile strength (UTS) exceeding 290 MPa, yield strength (YS) over 145 MPa, and elongation (EL) above 12% was successfully designed and industrially validated. The alloy outperforms previously reported counterparts in comprehensive mechanical properties. The performance was validated through flat die casting and flowability casting trials, and further applied in the integrated die casting of a full-scale automotive rear floor component. The successful demonstration clearly shows the high efficiency and practicality of the present design method, and is readily applicable to the design of other advanced structural alloys for parts.
Die-casting aluminum alloy, preparation method thereof, vehicle structural component and vehicle
CN121228056
The invention relates to a die-casting aluminum alloy, a preparation method thereof, a vehicle structural part and a vehicle. The die-casting aluminum alloy comprises, by weight, 0.3%-3.5% of Mn, 0.4%-2.0% of Fe, 0.02%-0.6% of Si, 0.01%-0.6% of Cr, 0.03%-0.45% of Ti, 0.01%-2.8% of Ni, 0.01%-0.4% of V, 0.01%-0.5% of Zr, 2.5% or less of Zn, 0.01%-7.0% of RE, 0.3% or less of microelements, 0.2% or less of impurities and the balance aluminum. The content ratio of Fe to Mn is 0.14-3.2, and the content ratio of Ni to Si is 2-60. The use requirement of die-casting aluminum alloy brazing can be met, and the mechanical property of parts is guaranteed.
Cast aluminum alloy and preparation method and application thereof
CN120924841
The invention relates to a cast aluminum alloy and a preparation method and application thereof. The cast aluminum alloy comprises the following components in percentage by weight: 1.5 to 2.5 percent of Fe, 1.05 to 2.0 percent of Ni, 0.005 to 0.08 percent of V, impurities and the balance of aluminum, wherein the content of a single impurity is less than 0.05 percent by weight. According to the cast aluminum alloy, the alloy cost can be reduced, and the cast aluminum alloy has high conductivity and high yield strength and can be used for manufacturing parts such as high-strength and high-conductivity motor rotors.
Composition for microcrystalline material, microcrystalline glass, preparation method of microcrystalline glass and electronic equipment
CN119930155
The invention relates to a composition for a microcrystalline material, microcrystalline glass, a preparation method of the microcrystalline glass and electronic equipment, and relates to the technical field of inorganic glass. The mass of each component of the composition accounts for the following percentage of the total mass of the composition: 68.2-78.5% of SiO2; 5.0 to 10.5 percent of Al2O3 (aluminum oxide); 10.3 to 18.7% of an alkali metal oxide; 5.0 to 13.4% of a nucleating agent; the alkali metal oxide includes Li2O. According to the composition for the microcrystalline material, the alkali metal oxide Li2O is added, and the proportion of all the components is controlled, so that the microcrystalline glass has relatively high ion exchange depth, and the microcrystalline glass prepared from the composition for the microcrystalline material has excellent anti-falling performance.
HEAT-TREATMENT-FREE DIE-CAST ALUMINUM ALLOY MATERIAL, PREPARATION METHOD THEREOF AND AUTOMOBILE STRUCTURAL MEMBER
US2025066882
To provide a heat-treatment-free die-cast aluminum alloy material, a preparation method thereof and an automobile structural member.SOLUTION: A heat-treatment-free die-cast aluminum alloy material includes: 8.5 to 11.0 wt% of Si, 0.2 wt% or less of Fe, 1.8 to 3.0 wt% of Cu, 1.0 to 2.0 wt% of Mg, 1.0 to 2.0 wt% of Zn, 0.1 to 0.3 wt% of Ti, 0.02 to 0.07 wt% of Sr, 0.03 to 0.06 wt% of Zr, 0.2 to 0.8 wt% of a metal M, and the balance of Al, where the metal M is one or both selected from Mn and Mo, based on the total weight of the die-cast aluminum alloy material. This composition improves the strength of the die-cast aluminum alloy material without applying heat treatment while also satisfying the performance requirements of an electrically driven housing.
HEAT-TREATMENT-FREE DIE-CASTING ALUMINUM ALLOY AND PREPARATION METHOD AND APPLICATION THEREOF
US2025051885
The present invention relates to a heat treatment-free die-casting aluminum alloy, a manufacturing method thereof, and an application thereof. the die-casting aluminum alloy is based on the total weight of the die-casting aluminum alloy. 10. 0~12. 0 % by weight of si, 0. 9~1. Mg of 5 wt. %, 2. 5~3. 5 % by weight cu, 0. 4-0. 8 % by weight of mn, 0. 9~1. 5 % by weight of zn, 0. 1-0. Ti of 2 wt. %, 0. 03-0. Sr of 06 wt. %, 0. Fe less than 18% by weight, 0. Less than or equal to 15% by weight of rare earth elements, 0. The other impurity element less than 1 weight% and extra al are included. and the rare earth materials is at least, one among sm and y. The heat treatment-free die-casting aluminum alloy provided in the present invention has significantly improved ultimate tensile strength and yield strength compared to the alloy of the existing automotive structural member, and is suitable for producing a high-strength lightweight motor structural member of a new energy electric vehicle.
Die-casting aluminum alloy material, preparation method thereof and automobile structural part
CN118028667
The invention relates to a die-casting aluminum alloy material, a preparation method of the die-casting aluminum alloy material and an automobile structural component, and the die-casting aluminum alloy material comprises, by weight, 8.5-13% of Si, 0.1-1% of Mn, 0-0.5% of Fe, 1.5-3% of Cu, 0.5-2% of Mg, 1.0-2.5% of Zn, 0.02-0.5% of Ti, 0.02-0.08% of Sr, 0.02-0.1% of Zr, 0-0.1% of Ni, and the balance aluminum and inevitable impurities. 0.1 wt% or less of impurities; and the balance of Al. The yield strength, the tensile strength and the ductility of the die-casting material can be improved under the heat-treatment-free condition; the high-temperature performance and the creep resistance of the die-casting material are improved; and the body performance requirement of the electric drive shell can be met.
DIE-CASTING ALUMINUM ALLOY WITHOUT HEAT-TREATMENT AND PREPARATION METHOD AND APPLICATION THEREOF
US2024139803
The present invention relates to a heat-treatment pre-die casting aluminum alloy, and a manufacturing method and an application thereof. Based on the total weight of the die-cast aluminum alloy, the die-casting aluminum alloy comprises: 6.0 to 8.0 wt% of Si; 0.3 to 1.2 wt% of Mg; 0.4 to 0.58 wt% of Cu; 0.1 to 0.3 wt% of Fe; 0.6 to 0.75 wt% of Mn; 0.05 to 0.20 wt% of Ti; 0.03 to 0.07 wt% of Sr; 0.03 to 0.07 wt% of Ce; 0.01 to 0.04 wt% of La; 0.01 to 0.1 wt% of Zr; and 0.01 wt% or less of other impurity elements and the remainder being Al. The ultimate tensile strength, yield strength and elongation at break of the heat-treatment pre-die casting aluminum alloy provided by the present invention are significantly improved compared to conventional automobile structural member alloys, and are suitable for manufacturing thin-walled members of large body structures of new energy electric vehicles.
Recycled regenerated aluminum alloy and preparation method thereof
CN118166246
The invention relates to a recycled aluminum alloy and a preparation method thereof, and the recycled aluminum alloy comprises the following components based on the total weight of the recycled aluminum alloy: 8.5 to 11.0 wt% of Si, 0.25 wt% or less of Fe, 0.2 to 1.0 wt% of Mn, 0.6 to 2.0 wt% of Mg, 1.0 to 2.0 wt% of Zn, 1.8 to 3.0 wt% of Cu, 0.05 to 0.20 wt% of Ti, 0.02 to 0.08 wt% of Sr, 0.02 to 0.08 wt% of Zr, 0.01 to 0.10 wt% of Be, impurities with the total amount of 0.10 wt% or less, and the balance of Al. The aluminum ingot can be made of the recycled aluminum material, the performance of the aluminum ingot can meet the requirements of original aluminum ingots, and the purposes of reducing the raw material cost and carbon emission are achieved.
Heat-treatment-free die-casting aluminum alloy as well as preparation method and application thereof
CN116287891
The invention relates to a heat-treatment-free die-casting aluminum alloy which comprises the following components in percentage by weight on the basis of the total weight of the die-casting aluminum alloy: 6.5 to 8.3 percent of Si, 0.2 to 0.4 percent of Mg, 0.25 to 0.50 percent of Cu, 0.09 to 0.25 percent of Fe, 0.5 to 0.8 percent of Mn, 0.05 to 0.20 percent of Ti, 0.02 to 0.04 percent of Sr, 0.01 to 0.1 percent of Zr, less than or equal to 0.05 percent of Hf, less than or equal to 0.25 percent of Zn, less than or equal to 0.1 percent of rare earth element and the balance of aluminum. Less than or equal to 0.05 wt% of other impurity elements and the balance Al; wherein the rare earth element comprises at least one of La, Ce and Y; the ratio of the total weight of Cu and Mg to the total weight of Zr and Hf is less than or equal to 22. According to the heat-treatment-free die-casting aluminum alloy, the ultrahigh strength performance is obtained, excellent light weight is achieved, and meanwhile the heat-crack-resistant tendency and the corrosion-resistant performance are good.
Aluminum alloy and preparation method thereof
CN116179911
The invention discloses an aluminum alloy and a preparation method thereof. The aluminum alloy comprises the following components in percentage by mass: 0.80 to 0.92 percent of Mg, 0.60 to 0.76 percent of Si, 0.60 to 0.99 percent of Cu, 0.05 to 0.20 percent of Mn, less than or equal to 0.10 percent of Fe and the balance of Al and impurities. By reasonably controlling the contents of the main alloy elements Mg and Si, the alloy elements Cu, Mn, Fe and impurities, after oxidation treatment, the aluminum alloy is free of common anode appearance defects such as frosting, yellowing and material lines, uniform and fine in color and luster, has the appearance characteristics of high brightness and transparency, and is very suitable for manufacturing appearance structural parts of 3C products.
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