Method of Cryogenic Quenching in the Surface Treatment of Aluminum Alloys
Cryogenic quenching delivers T6-like hardness to aluminum alloys without furnaces, enabling efficient tempering and cladding.
Researchers at Purdue University have developed a method of cryogenic quenching in the surface treatment of aluminum alloys. This technique uses high cooling rates to allow for a surface hardness similar to that of a T6 temper without the need to heat the workpiece in a high temperature furnace. In addition to heat treatment, this method can also be used to cool the alloy following laser material deposition. This technology represents a step forward for the surface treatment of high hardness aluminum alloys.
Advantages:
- Similar hardness to a T6 temper
- Does not require a high temperature furnace
- Can be used for surface buildup via material deposition
Applications:
- Tempering aluminum alloys
- Laser cladding of aluminum alloys
Technology Validation:
This technology has been validated through laboratory validation.
TRL: 4
Intellectual Property:
Provisional-Gov. Funding, 2021-08-25, United States
Utility-Gov. Funding, 2022-08-22, United States
DIV-Gov. Funding, 2025-02-24, United States
Keywords: Aluminum, heat treat, Laser Metal Deposition, metal cooling, quenching, Surface Treatment