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Preparation method of high-strength high-toughness corrosion-resistant nickel-based composite material and high-strength high-toughness corrosion-resistant nickel-based composite material

A high-strength, high-toughness, composite material technology, applied in the field of metal composite material preparation, to achieve the effects of easy preparation method, good interface bonding state, and high bonding strength

Active Publication Date: 2020-11-20
UNIV OF JINAN
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

High-entropy alloys have high strength, high hardness, excellent wear resistance and corrosion resistance, and excellent temper softening resistance. They are considered to be extremely promising and valuable metal matrix composite particle additive phases, which have not been seen so far. Application of high-entropy alloys as particle additive phases in nickel-based composites

Method used

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  • Preparation method of high-strength high-toughness corrosion-resistant nickel-based composite material and high-strength high-toughness corrosion-resistant nickel-based composite material
  • Preparation method of high-strength high-toughness corrosion-resistant nickel-based composite material and high-strength high-toughness corrosion-resistant nickel-based composite material
  • Preparation method of high-strength high-toughness corrosion-resistant nickel-based composite material and high-strength high-toughness corrosion-resistant nickel-based composite material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] Step (1): Preparation of high-entropy alloy powders: Co, Cr, Fe, Ni, Mn, Al metal powders with a purity of ≧99.5 wt.% according to (CoCrFeNiMn) 90 Al 10 Weigh, put each metal powder in a ball mill jar, vacuumize the ball mill jar and fill it with argon, and use cyclohexane as a process control agent. According to the conditions of speed: 350 rpm, mass ratio of ball to material: 15:1, time: 120 h, mechanical alloying was carried out to obtain (CoCrFeNiMn) 90 Al 10 High-entropy alloy powder; XRD pattern of high-entropy alloy figure 1 As can be seen from the figure, a face-centered cubic and body-centered cubic two-phase solid solution structure is formed. Powder particle size: 10~30μm.

[0035] Step (2): powder mixing: the (CoCrFeNiMn) prepared in step (1) 90 Al 10 The high-entropy alloy powder and pure nickel powder are loaded into a ball mill jar at a volume ratio of 1:4, and the ball mill jar is evacuated and protected by argon. Mix according to the conditions o...

Embodiment 2

[0039] Prepare bulk nickel-based composite material according to the method of Example 1, the difference is: (CoCrFeNiMn) 90 Al 10 The high-entropy alloy powder and pure nickel powder are loaded into the ball mill jar according to the volume ratio of 1:19.

Embodiment 3

[0041] Prepare bulk nickel-based composite material according to the method of Example 1, the difference is: (CoCrFeNiMn) 90 Al 10 High-entropy alloy powder and pure nickel powder are loaded into ball mill jars according to the volume ratio of 1:9.

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Abstract

The invention discloses a preparation method of a high-strength high-toughness corrosion-resistant nickel-based composite material and the high-strength high-toughness corrosion-resistant nickel-basedcomposite material. According to the composite material, (CoCrFeNiMn)<100-x>Alx dual-phase high-entropy alloy is adopted as a particle additive phase, and pure nickel is adopted as a matrix. The high-entropy alloy contains nickel elements, forms a concentration gradient with the nickel matrix, and promotes sufficient diffusion of nickel atoms between two phases in the sintering process, the interface bonding state is good, and the bonding strength is high. Based on the metastability characteristics, the dual-phase high-entropy alloy decomposes under high temperature and pressure conditions and forms a reinforcing phase in situ on the nickel matrix. The preparation process is simple, the obtained composite material is high in relative density, a submicron-scale aluminum-rich oxide and a nano-scale solid solution precipitation reinforcing phase are generated in situ, the composite material has the comprehensive mechanical properties of high hardness, high strength and excellent plasticity, and the seawater corrosion resistance is good.

Description

technical field [0001] The invention relates to a nickel-based composite material, in particular to a high-strength, high-toughness, corrosion-resistant nickel-based composite material with a dual-phase high-entropy alloy as a particle additive phase and a preparation method thereof, belonging to the technical field of metal composite material preparation. Background technique [0002] Nickel and nickel-based composite materials are an important class of materials with good mechanical, physical and chemical properties. They are mainly used in aviation and aerospace turbine engine parts, followed by corrosion-resistant materials in the petrochemical field. Electronic industry applications include nickel-based Soft magnetic materials, targets, batteries, etc. [0003] At present, most of the additive phases used in nickel-based composites are ceramic phases. The wettability and compatibility of the interface between ceramic particles and the nickel matrix are not good, and the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C1/10C22C1/04C22C19/05C22C30/00B22F9/04B22F3/105
CPCB22F3/105B22F9/04B22F2009/043C22C1/10C22C19/058C22C30/00
Inventor 王艳王乃冉王英姿
Owner UNIV OF JINAN
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