CN103469131B - A kind of intermediate blank preparation method analyzing Magnesium Alloy performance inhomogeneities - Google Patents
A kind of intermediate blank preparation method analyzing Magnesium Alloy performance inhomogeneities Download PDFInfo
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- CN103469131B CN103469131B CN201310419919.XA CN201310419919A CN103469131B CN 103469131 B CN103469131 B CN 103469131B CN 201310419919 A CN201310419919 A CN 201310419919A CN 103469131 B CN103469131 B CN 103469131B
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Abstract
The present invention relates to a kind of intermediate blank preparation method analyzing Magnesium Alloy performance inhomogeneities, belong to metal material moulding and processing technique field.The present invention uses the preparation method of five kinds " intermediate blank ", makes the scientific research of structure property in magnesium alloy " inhomogeneities " become possibility.By " inhomogeneities " of Magnesium Alloy and performance is controlled, magnesium alloy part high stability in severe Service Environment, high life application is made to be improved.
Description
Technical field
The present invention relates to a kind of intermediate blank preparation method analyzing Magnesium Alloy performance inhomogeneities, belong to
In metal material moulding and processing technique field.
Background technology
Magnesium alloy enjoys due to advantages such as light weight, specific strength height, electromagnetic wave shielding and damping property are good
Pay close attention to, be described as " 21 century the most promising green engineering material ".Close recently as magnesium
Gold preparation method, the improvement of forming technique and the research energetically of magnesium-rare earth, make magnesium alloy
It is used widely at military project, the aspect such as civilian.
Magnesium alloy is due to special close-packed hexagonal structure, and its a, c-axis are unequal, therefore, even outward
Test specimen that shape physical dimension is symmetrical or product there is also in plastic history that " tension and compression are asymmetric
Property ", when especially alloying level is higher, the influence factor of this " tension and compression unsymmetry "
The most more complicated, after causing deformation, the macro property of magnesium alloy exists " uneven in a certain direction
”。
It should be noted that if the physical dimension of magnesium alloy blank or product asymmetric or uneven time
, " stability " of magnesium alloy military service performance will be produced by " inhomogeneities " in this performance
The most serious raw impact, especially applies at high speed vapour (match) car when this kind of magnesium alloy part
Wheel hub, engine housing, missile case etc. are this kind of to be heated, power or the two clothes under effect jointly
During labour environment, " inhomogeneities " of this structure property is to product service life, military service safety
Impact be necessary for wanting quantitative Analysis and strictly controlling, and at present about magnesium alloy " tissue and property
Can inhomogeneities " related manufacturing processes of scientific research required " intermediate blank " there is not yet with technology
It has been proposed that.
Summary of the invention
Present invention aim at providing a kind of intermediate blank analyzing Magnesium Alloy performance inhomogeneities to prepare
Method, the method makes the scientific research of tissue and performance " inhomogeneities " in analysis magnesium alloy become
For possible；By " inhomogeneities " of Magnesium Alloy and performance is controlled, magnesium can be made
Stability that alloy product is applied in severe Service Environment and being improved service life.
Technical solution:
A kind of intermediate blank preparation method analyzing Magnesium Alloy performance inhomogeneities, preparation intermediate blank is former
Material base cylindrically shaped, after molding, the middle part of intermediate blank has inverted cone cavity body.
After described molding, the scope at intermediate blank θ angle is at 45 °-85 °, and highly h is in the range of 5mm-500m
m。
A kind of intermediate blank analyzing Magnesium Alloy performance inhomogeneities prepares other method, in the middle of preparation
Being shaped as of base raw material base is trapezoidal.
Described trapezoidal billet is isosceles trapezoid, right-angled trapezium or wedge shape.
Described isosceles trapezoid base angle β scope is 5 °-85 °, and scope of upper end a is 5mm-100mm, goes to the bottom
B scope is 10mm-200mm, and highly h scope is 5mm-200mm；The base angle Ψ scope of right-angled trapezium
It is 5 °-85 °, scope of upper end a
For 5mm-100mm, b scope of going to the bottom is 10mm-200mm, and highly h scope is 5mm-200mm；A model
Enclosing for 5mm-100mm, wedge shape rear end size b scope is 10mm-200mm, wedge shape slope angle Φ scope
It it is 5 °-85 °.
A kind of intermediate blank preparation method analyzing Magnesium Alloy performance inhomogeneities, intermediate blank uses squeezes
Press, forge, roll, punching press plastic deformation is processed into.
Further: a kind of intermediate blank preparation method analyzing Magnesium Alloy performance inhomogeneities, system
Standby intermediate blank raw material base be shaped as rectangle, use asynchronous or " asymmetric " rolling side of reducing
Method is processed into.
Further: a kind of intermediate blank analyzing Magnesium Alloy performance inhomogeneities, magnesium alloy includes into
Point mass percent be, Al mass fraction be 0-13%, Zn mass fraction be 0-6%, Ca matter
Amount mark be 0-6%, Mn mass fraction be 0-2%, Zr mass fraction be 0-6%, Li mass fraction
Being 0-6% for 0-15%, RE mass fraction, remaining is impurity.
Generally, different types of (deformation) magnesium alloy test specimen or product substantially will be through " prepared by material
, predeformation, intermediate blank, secondary operations, finished product " several stages.
" intermediate blank " in the present invention refer between " prepared by material " and " finished product " operation and
Carried out the general designation of a class blank of " predeformation ", it is characterised in that be somebody's turn to do " intermediate blank "
Both the scientific research analysis of " tissue and performance inhomogeneities " can be carried out, it is also possible to carry out again
" secondary operations (or heat treatment) " and become " finished product ".
In the present invention, the blank that can directly prepare " intermediate blank " is all defined as " raw material base "
, the concept of the beginning " prepared by material " to be different from foregoing sequence.
The present invention use and prepare in terms of " shape of raw material base and plastic working mode " two "
Intermediate blank ".
Advantage and functional characteristics:
For the ease of magnesium alloy being carried out " structure property inhomogeneities " applied research, it is provided that go out deformation
Magnesium alloy is the preparation side of " intermediate blank " of magnesium alloy under the conditions of " size and performance are uneven "
Method.
The present invention is to be prepared scheme by following " two big classes " to realize: the first kind is that raw material base uses circle
Cylindricality and trapezoidal, the magnesium alloy preparing " size is the most uneven with structure property " is " middle
Base "；Equations of The Second Kind raw material base then uses rectangle, the method using " asymmetric " rolling deformation,
Prepare " size uniform " but the magnesium alloy " intermediate blank " of " tissue and performance are uneven ".
The first kind, blank base uses cylindrical and trapezoidal, " size is the most uneven with structure property "
The preparation method of magnesium alloy " intermediate blank " have a following four:
(1) raw material base uses cylinder, prepares the magnesium alloy part of " wall thickness is unequal "
Cylindrical raw material base carries out plastic deformation on extruding, forging, pressing equipment, after molding "
Intermediate blank " middle part have " inverted cone " cavity body.Due to magnesium alloy part upper and lower respectively
Unbalance stress in part, makes the performance on magnesium alloy wall thickness direction there is inhomogeneities, prepares
The magnesium alloy part of " wall thickness is unequal ".
(2) raw material base uses isosceles trapezoid cross section, prepares the rolling product of magnesium alloy
Raw material base is made isosceles trapezoid cross sectional shape, due to the upper and lower surface of strip plate in the operation of rolling
Lifting surface area unequal, the performance on the upper and lower surface of rolled parts can be made to there is inhomogeneities.
(3) raw material base uses right-angled trapezium cross section, prepares magnesium alloy rolling product
Raw material base is made right-angled trapezium cross section shape, owing to strip plate each several part stress is not in the operation of rolling
Deng, the performance of rolled parts each several part can be made to there is inhomogeneities.
(4) raw material base uses wedge shape, prepares magnesium alloy rolling product
Raw material base being made wedge shape, rolls along wedge shape direction in the operation of rolling, last strip plate is chi
Very little uneven tabular, rolled blank, owing to being pressed up inequality in wedge shape side, causes its sense of organization
Inhomogeneities can be there is.
Equations of The Second Kind, raw material base uses rectangle, " size uniform " but " tissue and performance are uneven "
Magnesium alloy " intermediate blank " preparation method, has a following one:
(1) magnesium alloy part of " asymmetric " milling method of asynchronous or reducing
Raw material base uses the rectangle of common symmetric shape, is rolled by asynchronous or reducing roll mill,
Owing to the top and bottom rolls rotating speed of " asymmetric " roll mill is different or top and bottom rolls diameter
, can make the mechanical heterogeneity on the upper and lower surface of rolled parts, thus prepare that " size is equal
Even " but the magnesium alloy " intermediate blank " of " tissue and performance are uneven ".
Accompanying drawing explanation
Fig. 1 is the intermediate blank front view that the present invention is cylindrical；
Fig. 2 is the top view of Fig. 1；
Fig. 3 is isosceles trapezoid raw material base rolling figure of the present invention；
Fig. 4 is the side view of Fig. 3；
Fig. 5 is right-angled trapezium raw material base rolling figure of the present invention；
Fig. 6 is the side view of Fig. 5；
Fig. 7 is wedge shape raw material base rolling figure of the present invention；
Fig. 8 is square-section of the present invention asymmetrical rolling figure；
Fig. 9 is square-section of the present invention reducing rolling figure.
Detailed description of the invention
The present invention is directed to wrought magnesium alloy, with Mg as matrix, then add alloying element, microalloy unit
Element, wherein Al mass fraction be 0-13%, Zn mass fraction be 0-6%, Ca mass fraction be 0-6
%, Mn mass fraction be 0-2%, Zr mass fraction be 0-6%, Li mass fraction be 0-15%, RE
Mass fraction is 0-6%.
" prepared by material " process links of magnesium alloy can pass through casting, powder metallurgy, electromagnetic agitation and
First jet deposition (shaping) technology makes strand, sintered blank, deposit preform, passes through the most again
Extrude, forge, roll, the plastic deformation method such as punching press carries out " predeformation " or " secondary adds
Work (or heat treatment) ".
Embodiment 1
Seeing Fig. 1, in Fig. 1, θ scope is at 45 °-85 °, and product height h scope is 5mm-500mm.
Raw material base uses cylinder, the preparation of the magnesium alloy intermediate blank 1 of " wall thickness is unequal "
Use the plastic forming methods such as extruding, forging, punching press that cylindrical stock base is carried out plastic deformation
, prepare middle part and have
The intermediate blank 1 of " inverted cone " cavity body, owing to the existence of " inverted cone " makes the wall thickness of product exist
There is size in short transverse uneven, and on mutually level wall thickness direction, there is tissue
Performance is uneven.
Embodiment 2
Seeing Fig. 3, in Fig. 3,2 is roll, and 3 is isosceles trapezoid raw material base.The base angle of isosceles trapezoid
β scope is 5 °-85 °, and scope of upper end a is 5mm-100mm, and b scope of going to the bottom is 10mm-200m
M, highly h scope is 5mm-200mm.
Raw material base 3 uses the preparation of the magnesium alloy intermediate blank rolling product in isosceles trapezoid cross section, prepares
Waist trapezoid cross section raw material base, then carries out rolling deformation.
Embodiment 3
See that Fig. 5, raw material base 3 use right-angled trapezium cross section to roll out magnesium alloy " intermediate blank " by roll 2
。
The base angle Ψ scope of the right-angled trapezium in Fig. 5 is 5 °-85 °, and scope of upper end a is 5mm-100mm,
B scope of going to the bottom is 10mm-200mm, and highly h scope is 5mm-200mm.
Embodiment 4
See that Fig. 7, raw material base 3 use wedge shape section to pass through roll 2 and roll out magnesium alloy " intermediate blank ".
Nosed size a scope in Fig. 7 is 5mm-100mm, and wedge shape rear end size b scope is 10mm
-200mm, wedge shape slope angle Φ scope is 5 °-85 °.
Embodiment 5
See that Fig. 8, Fig. 9, raw material base 2 use square-section, at asynchronous or reducing roll 2 asymmetrical
Under roll out magnesium alloy " intermediate blank ".
Claims (3)
1. the intermediate blank preparation method analyzing Magnesium Alloy performance inhomogeneities, it is characterised in that the raw material base of preparation intermediate blank is cylindrically shaped, and after molding, the middle part of intermediate blank has inverted cone cavity body；The wall thickness dimension change of described intermediate blank be use extrude, forge, roll, punching press plastic deformation mode and realize.
A kind of intermediate blank preparation method analyzing Magnesium Alloy performance inhomogeneities the most according to claim 1, it is characterised in that after molding, the scope of the θ of intermediate blank blank is at 45 °-85 °, and highly h is in the range of 5mm-500mm.
A kind of intermediate blank preparation method analyzing Magnesium Alloy performance inhomogeneities the most according to claim 1 and 2, it is characterized in that, magnesium alloy includes that the mass percent of composition is, Al mass fraction is 0 < Al≤13%, and Zn mass fraction is 0 < Zn≤6%, Ca mass fraction is 0 < Ca≤6%, Mn mass fraction is 0 < Mn≤2%, and Zr mass fraction is 0 < Zr≤6%, and Li mass fraction is 0 < Li≤15%, RE mass fraction is 0 < RE≤6%, and remaining is Mg and impurity.
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| CN104789849A (en) * | 2015-03-23 | 2015-07-22 | 苏州市神龙门窗有限公司 | Material for magnesium alloy doors and windows and production method of material |
| CN107779711A (en) * | 2016-08-30 | 2018-03-09 | 江苏凤凰木业有限公司 | A kind of magnesium alloy stamping parts |
| CN116162874A (en) * | 2023-02-17 | 2023-05-26 | 中国科学院长春应用化学研究所 | Deformable magnesium alloy and preparation method thereof |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101104901A (en) * | 2007-08-14 | 2008-01-16 | 太原理工大学 | Flame-proof magnesium alloy added with beryllium and strontium and preparation method thereof |
| CN103143582A (en) * | 2013-03-21 | 2013-06-12 | 北京科技大学 | High-conductivity aluminum alloy plate extrusion forming device and technology |
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2013
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101104901A (en) * | 2007-08-14 | 2008-01-16 | 太原理工大学 | Flame-proof magnesium alloy added with beryllium and strontium and preparation method thereof |
| CN103143582A (en) * | 2013-03-21 | 2013-06-12 | 北京科技大学 | High-conductivity aluminum alloy plate extrusion forming device and technology |
Non-Patent Citations (1)
| Title |
|---|
| 铸造镁合金组织和性能的遗传性研究;丛福官;《中国优秀博硕士学位论文全文数据库（硕士） 工程科技I辑》;20051015(第6期);B022-6 * |
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