Method for enhancing mechanical property of AZ91D magnesium alloy
A magnesium alloy and mechanics technology, applied in the field of metal matrix composite material preparation, can solve the problems of poor plastic formability, low strength, hindering the application and development of AZ91D magnesium alloy, etc., and achieve the effect of improving elongation, strength and hardness
Inactive Publication Date: 2011-09-07
LANZHOU UNIVERSITY OF TECHNOLOGY
View PDF1 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
However, AZ91D magnesium alloy also has the following disadvantages: low strength, poor plastic formability, cannot be made into high-strength structural materials in industrial applications, and casting forming methods are also limited, which hinders the application and development of AZ91D magnesium alloy
Method used
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
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0016] The present invention is a kind of method that strengthens the mechanical property of AZ91D magnesium alloy, and its steps are:
[0017] (1) Carbon nanotubes (CNTs) were prepared by anodic arc plasma method:
[0018] ① Put carbon nanotubes into concentrated HNO 3 and concentrated H 2 SO 4 Soak in the mixed acid prepared at a volume ratio of 1:3 for 24 hours, rinse with deionized water, let stand for 4 hours, collect the supernatant, wash repeatedly until pH = 7, collect all the supernatant and let stand Make it precipitate for 24 hours, then filter and dry the precipitate;
[0019] ② Put the dried precipitate into SnCl 2 2H 2 O: 20g / L, HCl: 40g / L in the sensitization solution to make SnCl 2 Deposit on the surface of carbon nanotubes, wash the solution repeatedly until pH=7, and then dry it;
[0020] ③Put it in PdCl 2 : 0.5g / L, HCl: 40g / L in the activation solution for 10 minutes, then repeatedly washed with water until pH = 7 and then dried;
[0021] ④Put it in...
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 PUM
| Property | Measurement | Unit |
|---|---|---|
| Brinell hardness | aaaaa | aaaaa |
| hardness | aaaaa | aaaaa |
| elongation | aaaaa | aaaaa |
Login to View More
Abstract
The invention discloses a method for enhancing the mechanical property of an AZ91D magnesium alloy, and aims to improve the comprehensive mechanical property of an AZ91D composite material. The preparation method comprises the following steps of: preparing carbon nano tubes by using an anodic arc plasma method; purifying, sensitizing and activating the carbon nano tubes and plating nickel on the carbon nano tubes; placing the AZ91D in a cast-iron crucible at 720 DEG C under an as-cast condition, melting the AZ91D, adding CNTs and SiCp into the molten AZ91D and stirring the mixture for 5 minutes; and casting, solidifying and stripping the mould. The modulus of elasticity, hardness, tensile strength and elongation of the composite material are improved by 29.8 percent, 9.39 percent, 46.77 percent and 14.69 percent respectively by grain refinement and dislocation strengthening.
Description
technical field [0001] The invention relates to the preparation technology of metal matrix composite materials. Background technique [0002] AZ91D magnesium alloy is one of the earliest developed and most widely used magnesium alloys. It has the advantages of low density, high specific strength, good damping, and good thermal conductivity. It is widely used in automobiles, electronics, electrical appliances and other industrial fields. However, AZ91D magnesium alloy also has the following disadvantages: low strength, poor plastic formability, cannot be made into high-strength structural materials in industrial applications, and casting forming methods are also limited, which hinders the application and development of AZ91D magnesium alloy. Contents of the invention [0003] The purpose of the invention is to improve the comprehensive mechanical properties of the AZ91D composite material. [0004] The present invention is a kind of method that strengthens the mechanical p...
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 Application Information
Patent Timeline
Login to View More Patent Type & Authority Patents(China)
IPC IPC(8): C01B31/02C22C47/08
Inventor 戴剑锋李维学郝远陈体军王青王敦栋金辉石刚
Owner LANZHOU UNIVERSITY OF TECHNOLOGY