A method to improve the mechanical properties of amorphous endogenous composites by driving the recovery of amorphous matrix structure through the shape memory effect

A memory effect, composite material technology, applied in the field of amorphous alloys and endogenous composite materials, can solve the problems of insufficient softening effect, weak hardening ability, etc., to achieve simple implementation, significant improvement in mechanical properties, and improved mechanical properties. Effect
CN111500958BActive Publication Date: 2021-11-05INST OF METAL RESEARCH - CHINESE ACAD OF SCI
0 Cites 0 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
INST OF METAL RESEARCH - CHINESE ACAD OF SCI
Publication Date
2021-11-05

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
  • Figure 3
    Figure 3
Patent Text Reader

Abstract

The invention relates to a method for improving the mechanical properties of an amorphous endogenous composite material through recovery of an amorphous matrix structure, and belongs to the field of amorphous alloys and endogenous composite materials. The microstructure characteristics of this kind of amorphous endogenous composite material are: the endogenous crystalline phase with reversible phase transition is distributed in the amorphous matrix. Under tensile loading, such amorphous endogenous composites exhibit superelasticity, i.e. complete shape recovery after small strain unloading. Through tensile cyclic loading at small strains, the amorphous matrix phase in the amorphous endogenous composites undergoes structural recovery driven by the "shape memory effect". The structurally restored amorphous matrix can lead to a significant improvement in the mechanical properties of amorphous endogenous composites, including improved tensile plasticity and prolonged work-hardening stages. This method can improve the mechanical properties of the amorphous endogenous composite material, and then expand its practical application as a structural material, which has important social and economic benefits.
Need to check novelty before this filing date? Find Prior Art

Description

Technical field

[0001] The present invention relates to a method of recovering the mechanical properties of amorphous endogenic composites by amorphous matrix structure, including microstructure characteristics and mechanical properties, amorphous matrix structural reply mechanism and implementation methods, Amorphous alloy and its endogenous composites. Background technique

[0002] The amorphous alloy has excellent mechanical properties such as high strength, high hardness, large elasticity, and has a broad application of structural materials. However, the block-shaped amorphous alloy has no macroscopic stretched plasticity at room temperature, which seriously limits the amorphous alloy as a wide range of application of structural materials. Studies have shown that the energy state and structure of amorphous alloys are closely related to their mechanical properties. Amorphous alloys are thermodynamically metastable states, which will undergo less energy states, and higher state...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More