CN103317125A - Method for manufacturing metastable-phase engineering material by means of controlling solidification procedure - Google Patents
Method for manufacturing metastable-phase engineering material by means of controlling solidification procedure Download PDFInfo
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Abstract
The invention relates to a method for manufacturing a metastable-phase engineering material by means of controlling a solidification procedure. The metastable-phase engineering material is made of alloy which comprises, by mass, 79.9-98% of iron, 2.0-18.0% of manganese and 0-2.1% of carbon, and the sum of the masses of various components of the ally is 100%. An experiment for the metastable-phase engineering material includes steps of mixing iron-manganese-carbon bulk raw materials with the grain sizes of 1-2mm into a vacuum spray-formatting system; heating the raw materials to reach the temperature of 1400-1600 DEG C by the aid of induced currents; melting the raw materials into liquid; filling argon into the liquid until proper pressure difference is acquired; injecting the melted liquid into a copper mold combination comprising cavities with the sizes of 1-4mm to acquire different cooling speeds; forming a sheet with the thickness of 1-4mm. As shown by extension tests, the tensile strength of the metastable-phase engineering material is 798.88-923.60MPa, the elongation of the metastable-phase engineering material is 16.82-61.26%, and a strength product of the metastable-phase engineering material can reach 56GPa%. The method has the advantages that a metastable-phase and metastable-state tissue can be directly dissolved out in the solidification procedure without heat treatment, the high-performance metastable-phase engineering material can be manufactured, resources are saved, excessive wastage of energy is prevented, and environmental pollution is relieved.
Description
Technical field
The invention belongs to the inferior flash set technology field that reaches fast, relate to a kind of method for preparing high-performance metastable phase engineering material.
Background technology
The metal material range of application is vast, its development and people's lives, national economy, national defense construction are closely related, and has a critical role, and along with the growth requirement amount of society is also more and more many, the annual metal that consumes in the world reaches billions of tons at present, in process of production, owing to exist problem and environment for human survival and the contrary contradictions of sustainable development such as energy consumption, discharging and pollution.Therefore, need develop more advanced manufacture of materials technology, demands of social development is satisfied in the consumption of the minimizing energy and environmental pollution etc. when improving metallicity.For the metal engineering material, the control of separating out behavior by separating out of metastable phase (as martensite, bainite etc.) and metastable phase is the important method that improves performance, has become important research direction and the development trend in material field.
For the regulation and control that obtain metastable phase or realize metastable phase is separated out, the metal engineering material is all undertaken by heat treatment or deforming technique under solid conditions mostly at present, and undoubtedly these methods have obtained huge achievement at raising metal material aspect of performance.But the formation of these metastable phases and regulation and control are after metal material solidifies, handle through again heating and rolling deformation and to carry out, when improving material property, also increased energy resource consumption and carrying capacity of environment, the more important thing is that the method for the metastable phase that can control acquisition in the initial solidification process of material preparation and metastable organization and these metastable phases and the effect of metastable organization in improving material property are also out in the cold.
Nearly all metallic article all will experience the process of setting of one or many in its production process, if directly obtain metastable phase from liquid phase by the control process of setting, both can simplify heat treatment step, energy savings, minimizing is polluted and is enhanced productivity, also might obtain the metastable phase that solid conditions can not obtain, thereby improve material property greatly.Fast and inferior flash set technology have thinning solidification structure, form metastable phase or structure, expansion solid solubility limit and reduce characteristics such as segregation, therefore by controlling fast and separating out of inferior rapid solidification control metastable phase and metastable organization is that the metastable new material of exploitation or the important technology that improves traditional material are selected.
Summary of the invention
The purpose of this invention is to provide a kind of by control process of setting prepare high-performance metastable phase engineering material, solved problems of the prior art.By process of setting such as control cooling velocity and material compositions, directly separate out metastable phase from liquid phase, form metastable organization, directly obtain high performance engineering material.Can simplify heat treatment step, energy savings, minimizing is polluted and is enhanced productivity, and might obtain the metastable phase that solid conditions can not obtain, thereby improves material property greatly, easy control of components, the excellent material performance that obtains.
The technical scheme of concrete enforcement of the present invention is, quality of materials is than being iron 79.9%-98%, manganese 2.0%-18.0%, carbon 0%-2.1%, each constituent mass sum 100%, put into vacuum spray to cast system, make thin plate, lamella thickness is 1.0mm-4.0mm, corresponding different cooldown rates, control obtains being conducive to metastable phase and the metastable organization of mechanical property, and this method may further comprise the steps:
A. get iron 79.9%-98% by mass ratio, manganese 2.0%-18.0%, carbon 0%-2.1%, quality 100% altogether, and the biggest quality is no more than 10g, about the about 1-2mm of particle diameter, mixes and puts into quartz ampoule.
B. the metal in the quartz ampoule is fused into liquid under the induced-current effect, temperature to 1400 ℃-1600 ℃, and induction coil feeds the recirculated water cooling, is melted to appropriate viscosity.
C. pass through quartz ampoule head pipeline towards argon gas, be adjusted to suitable pressure differential, the metal liquid that melts away is injected copper mold.
D. copper mold is placed on the brace table of vacuum cavity, and dimidiation is by the latten of different die assembly acquisition different-thickness.
E. latten thickness 1.0-4.0mm, thus different cooling obtained.
F. use the phase of organizing of tem analysis thin plate, detect mechanical property by extension test.Obtain tensile strength 798.88MPa-923.60MPa, percentage elongation is 16.82%-61.26%, the long-pending thin plate that can reach the 1-4mm thickness of 56GPa% of intensity.
This method is that material directly obtains metastable phase and metastable organizations such as α '-martensite and ε-martensite under quick and inferior rapid solidification, obtains the metastable phase material of very-high performance, need not subsequent heat treatment.
The present invention has successfully prepared high-performance metastable phase engineering material, and this method is simple to operate, does not need subsequent hot rolled heat treatment etc., metastable phase and the metastable organization that can directly obtain to improve material property, and the utilization of saving resource reduces the waste of the energy.
Description of drawings
Fig. 1 is Fe-11Mn-0.1C, 2.0mm thin plate tensile stress strain curve.
Fig. 2 is Fe-18Mn-0.5C, 2.0mm thin plate tensile stress strain curve.
The specific embodiment
The present invention is described in detail below in conjunction with embodiment:
Embodiment one
Concrete steps are as follows:
A. get iron 88.9% by quality, manganese 11.0%, carbon 0.1%, gross mass 10g, particle diameter 1-2mm mixes the quartz ampoule of putting into vacuum spray to cast system.
B. the metal in the quartz ampoule is fused into liquid under the induced-current effect, temperature to 1500 ℃, and induction coil feeds the recirculated water cooling, is melted to appropriate viscosity.
C. pass through quartz ampoule head pipeline towards argon gas, be adjusted to suitable pressure differential, the metal liquid that melts away is injected copper mold.
D. copper mold is placed on the brace table of vacuum cavity, dimidiation, the copper mold combination of chosen distance 2.0mm distance.
E. obtain the thin plate of 2.0mm thickness cooling velocity.
F. use the structure of tem analysis thin plate, contain in the tissue alpha martensite and
ε-martensite, tensile property are as shown in Figure 1.
Embodiment two
Concrete steps are as follows:
A. get iron 81.5% by quality, manganese 18.0%, carbon 0.5%, gross mass 10g, the about 1-2mm of particle diameter mixes the quartz ampoule of putting into vacuum spray to cast system
B. the metal in the quartz ampoule is fused into liquid under the induced-current effect, temperature to 1500 ℃, and induction coil feeds the recirculated water cooling, is melted to appropriate viscosity
C. pass through quartz ampoule head pipeline towards argon gas, be adjusted to suitable pressure differential, the metal liquid that melts away is injected copper mold
D. mould is placed on the brace table of vacuum cavity, dimidiation, the copper mold combination of chosen distance 2.0mm distance
E. obtain the thin plate of 2.0mm thickness cooling velocity
F. use the structure organization of tem analysis thin plate, microscopic structure is
ε-Martensite, and in the middle of the martensite a small amount of fault is arranged, be illustrated in figure 2 as the mechanical property that alloy stretches.
Claims (2)
1. the method for preparing the metastable phase engineering material by the control process of setting, be characterised in that shape volume, heating-up temperature and the pulling rate influence factor of in the material solidification process, controlling cooling velocity, thermograde, material, the control resulting metastable phase of material solidification and tissue, this method comprises following operating procedure:
A. be the raw material preparing ternary alloy three-partalloy with ferrimanganic carbon, mass ratio is iron 79.9%-98%, manganese 2.0%-18.0%, carbon 0%-2.1%, each constituent mass sum 100%;
B. raw material are added in the quartz ampoule of vacuum spray to cast system with graininess, granular size is 1-2mm, and gross mass is 10g;
C. use induced-current to be heated to 1400 ℃-1600 ℃, melt to appropriate viscosity;
D. pass through quartz ampoule head pipeline towards argon gas, be adjusted to suitable pressure differential, the metal liquid that melts away is injected copper mold, cavity size is 1-4mm, thereby obtains different cooldown rates;
E. obtain tensile strength 798.88MPa-923.60MPa, percentage elongation is 16.82%-61.26%, the long-pending thin plate that can reach the 1-4mm thickness of 56GPa% of intensity.
2. according to claim 1 by controlling the method that process of setting prepares the metastable phase engineering material, it is characterized in that material is directly obtaining metastable phase and metastable organizations such as α '-martensite and ε-martensite fast and under the inferior rapid solidification, obtain the metastable phase material of very-high performance, need not subsequent heat treatment.
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Citations (7)
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| CN1165061A (en) * | 1996-05-09 | 1997-11-19 | 冶金工业部包头稀土研究院 | Production of crystalline state and amorphous state rare-earth metal alloy threadlet and its device |
| JP2000297350A (en) * | 1999-02-09 | 2000-10-24 | Kawasaki Steel Corp | High tensile strength hot rolled steel plate excellent in baking hardenability, fatigue resistance, impact resistance and ordinary temperature aging resistance and its production |
| WO2001000897A1 (en) * | 1999-06-24 | 2001-01-04 | Basf Aktiengesellschaft | Nickel-poor austenitic steel |
| CN1401450A (en) * | 2001-08-15 | 2003-03-12 | 中国科学院金属研究所 | Melt near quick setting method and special apparatus |
| CN1786234A (en) * | 2005-12-27 | 2006-06-14 | 北京航空航天大学 | Method of preparing TiC-FeNiCrMo composite material using aluminothermic-fast solidification technology and its device |
| CN101722296A (en) * | 2009-11-26 | 2010-06-09 | 上海大学 | Physical simulation method and physical simulation device utilizing suction casting to research solidification of strip continuous casting |
| CN102896304A (en) * | 2012-09-21 | 2013-01-30 | 上海大学 | Method for improving isometric crystal rate of casting blanks through two-phase competition in peritectic alloy |
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2013
- 2013-06-24 CN CN201310252705.8A patent/CN103317125B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1165061A (en) * | 1996-05-09 | 1997-11-19 | 冶金工业部包头稀土研究院 | Production of crystalline state and amorphous state rare-earth metal alloy threadlet and its device |
| JP2000297350A (en) * | 1999-02-09 | 2000-10-24 | Kawasaki Steel Corp | High tensile strength hot rolled steel plate excellent in baking hardenability, fatigue resistance, impact resistance and ordinary temperature aging resistance and its production |
| WO2001000897A1 (en) * | 1999-06-24 | 2001-01-04 | Basf Aktiengesellschaft | Nickel-poor austenitic steel |
| CN1401450A (en) * | 2001-08-15 | 2003-03-12 | 中国科学院金属研究所 | Melt near quick setting method and special apparatus |
| CN1786234A (en) * | 2005-12-27 | 2006-06-14 | 北京航空航天大学 | Method of preparing TiC-FeNiCrMo composite material using aluminothermic-fast solidification technology and its device |
| CN101722296A (en) * | 2009-11-26 | 2010-06-09 | 上海大学 | Physical simulation method and physical simulation device utilizing suction casting to research solidification of strip continuous casting |
| CN102896304A (en) * | 2012-09-21 | 2013-01-30 | 上海大学 | Method for improving isometric crystal rate of casting blanks through two-phase competition in peritectic alloy |
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