# US 9,517,545 B2 · Nanostructured-lattices produced by surface mechanical attrition treatment method

> Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt

- Number: US 9,517,545 B2
- Document ID: US9517545B2
- Status: Granted
- Kind: B2
- Application number: 14/449,158
- Filed: 2014-08-01
- Published: 2015-02-05
- Granted: 2016-12-13
- Earliest claimed: 2013-08-02
- Assignees: Nano and Advanced Materials Institute Limited
- Applicants: Nano and Advanced Materials Institute Limited
- Inventors: Jian Lu; Phu Son Mai; Chun Sheng Wen
- Web page: https://patentgrep.com/patent/US9517545B2

## CPC

- B24C 5/005: {Vibratory devices, e.g. for generating abrasive blasts by ultrasonic vibrations (sonic cleaning in general B08B3/12)}
- B24C 1/04: for treating only selected parts of a surface, e.g. for carving stone or glass
- B26F 3/004: {by means of a fluid jet (methods for use of abrasive blasting for cutting B24C1/045; guns for abrasive fluid jets B24C5/02; perforating by non-mechanical means, e.g. by fluid jet B26F1/26)}
- C21D 7/06: by shot-peening or the like
- B24C: ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
- B26F: PERFORATING; PUNCHING; CUTTING-OUT; STAMPING-OUT; SEVERING BY MEANS OTHER THAN CUTTING (marking-out, perforating or making buttonholes A41H25/00; shoemaking A43D; surgery A61B; punching metal B21D; drilling metal B23B; cutting of metal by applying heat locally, e.g. flame cutting, B23K; cutting by abrasive fluid jets B24C5/02; details common to machines for severing B26D; drilling wood B27C; drilling stone B28D; working of plastics or substances in a plastic state B29; making boxes, cartons, envelopes or bags, of paper or similarly worked materials, e.g. metal foil, B31B; of glass C03B; of leather C14B; of textile materials D06H; for light guides G02B6/25; of tickets G07B)
- C21D: MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING (surface treatment of metallic material involving at least one process provided for in class C23 and at least one process covered by this subclass C23F17/00; unidirectional solidification of eutectic materials or unidirectional demixing of eutectoid materials C30B)

## Abstract

The present invention is about the design and manufacturing method of constructing nano-structured lattices. The design of the four periodic two-dimensional lattices (hexagonal, triangulated, square and Kagome) is described; and the process of making nano-structured lattices is outlined in the present invention.

## Claims

### Claim 1

A method for fabricating a nano-structured lattice based on surface mechanical attrition treatment (SMAT), comprising:
partly or completely treating a solid material by the SMAT; and
cutting off one or more holes from the treated solid material to form a lattice comprising a plurality of bar members connected to each others by one or more nodes;
wherein one or more of the bar members are partly or completely treated by the SMAT;
wherein the lattice comprises a square lattice comprising the holes in square shape;
wherein the treated bar members are partly treated at one or more end portions of the treated bar members within a circle around the node; and
wherein the circle has a radius (R) calculated by:
R=(1−1/k)l/2
where k is SMAT duration, and l is length of each of the bar members.

### Claim 2 (depends on 1)

The method of claim 1, wherein the one or more holes are cut by a water-cutting machine.

### Claim 3 (depends on 1)

The method of claim 1, wherein the SMAT-treated bar members are horizontal bars being subjected to an applied loading along a horizontal axis of the square lattice.

### Claim 4 (depends on 1)

The method of claim 1, wherein the solid material is a solid stainless steel sheet.

### Claim 5 (depends on 4)

The method of claim 4, wherein the SMAT comprises impacting the solid stainless steel sheet with one or more projectiles.

### Claim 6 (depends on 5)

The method of claim 5, wherein the one or more projectiles are impacted to the solid stainless steel sheet in an acoustic isolation chamber.

### Claim 7 (depends on 5)

The method of claim 5, wherein the SMAT further comprises:
covering the solid stainless steel sheet with at least one cloth for partly treating the solid steel sheet.

### Claim 8 (depends on 5)

The method of claim 5, wherein the projectiles are actuated by a vibration generator.