One kind preparing semisolid Mg based on ultrasound2Si particles enhance the method for building up of MgAlMn composite material rheological models
One kind preparing semisolid Mg based on ultrasound2Si particles enhance the method for building up of MgAlMn composite material rheological models
 CN 104,148,608 B
 Filed: 08/06/2014
 Issued: 08/03/2018
 Est. Priority Date: 08/06/2014
 Status: Active Grant
First Claim
1. one kind preparing semisolid Mg based on ultrasound_{2}Si particles enhance the method for building up of MgAlMn composite material rheological models,It is characterized in including the following steps：
 1) it using AM60 alloys as matrix, by the way that AlSi intermediate alloys are added into matrix alloy, using ultrasonic vibration method, preparesMg_{2}Si particles enhance MgAlMn composite material semisolid state slurries；
The AM60 alloys form as follows based on mass fraction：
Al5.95%, Zn 0.008%, Mn 0.387%, Si 0.03%, surplus Mg；
2) Mg is obtained by experiment under ultrasound condition_{2}Si particles enhance MgAlMn composite materials apparent viscosity and Mg_{2}Si enhancesThe relationship of phase volume fraction, solid rate, and use η
_{mmc}/η
_{m}=(1+af_{Mg2Si}+bf^{2}_{Mg2Si}) formula expressed, wherein η
_{mmc}ForThe apparent viscosity of composite material, η
_{m}For the apparent viscosity of matrix, f_{Mg2Si}For Mg_{2}The volume fraction of Si, a, b are constant term；
3) in the apparent viscosity Fundamentals of Measurement of basis material, using η
_{m}=Aexp (Bf_{s}) formula expressed, wherein B is constant, f_{s}For solid rate, A is the power function about ultrasonic power；
Parameter A uses A=cP^{d}Formula is expressed, wherein c, and d is normalSeveral, P is ultrasonic power；
4) according to step
2),
3) obtain Mg_{2}Si particles enhance the rheological model of MgAlMn composite materials：
η
_{mmc}=cexp (Bf_{s})P^{d}(1+af_{Mg2Si}+bf^{2}_{Mg2Si})；
To containing 1.25vol%Mg_{2}Si composite materials and 5.0vol%Mg_{2}The calculated value of Si composite materials is compared with experiment value, is foundResult of calculation is coincide well with experimental result, and rheological model computational accuracy is high.
Chinese PRB Reexamination
Abstract
One kind preparing semisolid Mg based on ultrasound_{2}The method for building up of Si particles enhancing Mg Al Mn composite material rheological models, 1) ultrasonic vibration method is used, prepare Mg_{2}Si particles enhance Mg Al Mn composite material semisolid state slurries；2) Mg is obtained under ultrasound condition_{2}Si particles enhance Mg Al Mn composite materials apparent viscosities and Mg_{2}Si enhances the relationship of phase volume fraction, solid rate, uses η_{mmc}/η_{m}=(1+af_{Mg2Si}+bf^{2}_{Mg2Si}) expression；3) in the apparent viscosity Fundamentals of Measurement of basis material, η_{m}=Aexp (Bf_{s}), wherein B is constant term, f_{s}For solid rate, A is the power function about ultrasonic power；Parameter A uses A=cP^{‑d}Formula is expressed, wherein c, and d is constant term, and P is ultrasonic power；4) according to 2), 3) obtain rheological model：η_{mmc}=cexp (Bf_{s})P^{‑d}(1+af_{Mg2Si}+bf^{2}_{Mg2Si}).The present invention can obtain the semisolid Mg of ultrasound preparation_{2}Si particles enhance the rheological behavior of Mg Al Mn composite materials, are of great significance for optimization rheological molding technological parameter.
1 Claim

1. one kind preparing semisolid Mg based on ultrasound_{2}Si particles enhance the method for building up of MgAlMn composite material rheological models,It is characterized in including the following steps：

1) it using AM60 alloys as matrix, by the way that AlSi intermediate alloys are added into matrix alloy, using ultrasonic vibration method, preparesMg_{2}Si particles enhance MgAlMn composite material semisolid state slurries；
The AM60 alloys form as follows based on mass fraction：
Al5.95%, Zn 0.008%, Mn 0.387%, Si 0.03%, surplus Mg；2) Mg is obtained by experiment under ultrasound condition_{2}Si particles enhance MgAlMn composite materials apparent viscosity and Mg_{2}Si enhancesThe relationship of phase volume fraction, solid rate, and use η
_{mmc}/η
_{m}=(1+af_{Mg2Si}+bf^{2}_{Mg2Si}) formula expressed, wherein η
_{mmc}ForThe apparent viscosity of composite material, η
_{m}For the apparent viscosity of matrix, f_{Mg2Si}For Mg_{2}The volume fraction of Si, a, b are constant term；3) in the apparent viscosity Fundamentals of Measurement of basis material, using η
_{m}=Aexp (Bf_{s}) formula expressed, wherein B is constant, f_{s}For solid rate, A is the power function about ultrasonic power；
Parameter A uses A=cP^{d}Formula is expressed, wherein c, and d is normalSeveral, P is ultrasonic power；4) according to step
2),
3) obtain Mg_{2}Si particles enhance the rheological model of MgAlMn composite materials：η
_{mmc}=cexp (Bf_{s})P^{d}(1+af_{Mg2Si}+bf^{2}_{Mg2Si})；To containing 1.25vol%Mg_{2}Si composite materials and 5.0vol%Mg_{2}The calculated value of Si composite materials is compared with experiment value, is foundResult of calculation is coincide well with experimental result, and rheological model computational accuracy is high.

Specification(s)