CN103317125B - The method of metastable phase engineering material is prepared by control solidi fication process - Google Patents
The method of metastable phase engineering material is prepared by control solidi fication process Download PDFInfo
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Abstract
The present invention relates to a kind of method being prepared metastable phase engineering material by control solidi fication process, raw material are mass ratioes is iron 79.9%-98%, manganese 2.0%-18.0%, the alloy of carbon 0%-2.1%, each constituent mass sum 100%, experiment comprises the following steps: add in vacuum spray to cast system by block for the ferrimanganic carbon of 1-2mm particle diameter raw material mixing, 1400 DEG C-1600 DEG C are heated to through induced-current, be melt into liquid, rush argon gas and form suitable pressure differential, melt liquid is sprayed in the copper mold combination of 1-4mm size cavities to obtain different cooling velocities, forming thickness is the thin plate of 1-4mm, drawn tested for tensile strength 798.88MPa-923.60MPa, percentage elongation is 16.82%-61.26%, intensity is long-pending can reach 56GPa%.The method does not need to heat-treat the metastable phase and metastable state tissue directly separated out in process of setting, obtains high performance metastable phase engineering material, saving resource, prevents the too much waste of the energy, alleviate environmental pollution.
Description
Technical field
The invention belongs to quick and Sub realizable fuzzy matrix technical field, relate to a kind of method preparing high-performance metastable phase engineering material.
Background technology
Metal material range of application is vast, its development and people's lives, national economy, national defense construction are closely related, and there is very important status, and along with the growth requirement amount of society is also more and more many, the metal that the current world consumes every year reaches billions of ton, in process of production, owing to there is the problems such as energy consumption, discharge and pollution and environment for human survival and the contrary contradiction of sustainable development.Therefore, needing to develop more advanced manufacture of materials technology, improving the consumption that reduces the energy while metallicity and environmental pollution etc., meeting the needs of social development.For metal engineering material, be put forward high performance important method by the precipitation of metastable phase (as martensite, bainite etc.) and the control of metastable phase pick-up behavior, become important research direction and the development trend of Material Field.
In order to the regulation and control obtaining metastable phase or realize metastable phase precipitation, metal engineering material is all undertaken by heat treatment or deforming technique under solid conditions mostly at present, and certainly these methods achieve 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, carry out through heating again and rolling deformation process, while raising material property, too increase energy resource consumption and carrying capacity of environment, the more important thing is in the initial solidification process prepared at material that the metastable phase and the method for metastable organization and these metastable phases that can control to obtain and metastable organization are to improve the effect in material property 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 control solidi fication process, both heat treatment step can be simplified, economize energy, decreasing pollution and enhancing productivity, also likely obtain the not obtainable metastable phase of solid conditions, thus greatly improve material property.Quick and Sub realizable fuzzy matrix technology has thinning solidification structure, formation metastable phase or structure, expansion solid solubility limit and reduces the features such as segregation, and therefore quick by control and Sub realizable fuzzy matrix process control metastable phase and metastable organization precipitation is the important technology selection of developing metastable new material or improving traditional material.
Summary of the invention
The object of this invention is to provide one and prepare high-performance metastable phase engineering material by control solidi fication process, solve problems of the prior art.By process of setting such as controlled cooling model speed and material compositions, directly separate out metastable phase from liquid phase, form metastable organization, directly obtain high performance engineering material.Can heat treatment step be simplified, economize energy, decreasing pollution and enhancing productivity, and likely obtain the not obtainable metastable phase of solid conditions, thus greatly improve material property, easy control of components, the excellent material performance obtained.
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 to obtain the metastable phase and the metastable organization that are conducive to mechanical property, the method comprises the following steps:
A. get iron 79.9%-98% in mass ratio, manganese 2.0%-18.0%, carbon 0%-2.1%, altogether quality 100%, the biggest quality is no more than 10g, and particle diameter is about about 1-2mm, mixes and puts into quartz ampoule.
B. the metal in quartz ampoule is fused into liquid under induced-current effect, and temperature is to 1400 DEG C-1600 DEG C, and induction coil passes into circulating water, is melted to appropriate viscosity.
C. rush argon gas by quartz ampoule head pipeline, be adjusted to suitable pressure differential, the metal liquid melted away is injected copper mold.
D. copper mold is placed on the brace table of vacuum cavity, dimidiation, is obtained the latten of different-thickness by different die assemblies.
E. latten thickness 1.0-4.0mm, thus obtain different cooling.
What F. use tem analysis thin plate organizes phase, detects mechanical property by extension test.Obtain tensile strength 798.88MPa-923.60MPa, percentage elongation is 16.82%-61.26%, and intensity amasss the thin plate of the 1-4mm thickness that can reach 56GPa%.
To be material directly obtain metastable phase and the metastable organization such as α '-martensite and ε-martensite to the method under quick and Sub realizable fuzzy matrix, obtains the metastable phase material of very-high performance, without the need to subsequent heat treatment.
The present invention has successfully prepared high-performance metastable phase engineering material, and the method is simple to operate, does not need subsequent hot rolled heat treatment etc., directly can obtain the metastable phase and metastable organization that improve material property, the utilization of saving resource, reduce the waste of the energy.
Accompanying drawing explanation
Fig. 1 is Fe-11Mn-0.1C, 2.0mm Sheet stretch stress-strain diagram.
Fig. 2 is Fe-18Mn-0.5C, 2.0mm Sheet stretch stress-strain diagram.
Detailed description of the invention
Below in conjunction with embodiment, the present invention is described in detail:
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, mix the quartz ampoule putting into vacuum spray to cast system.
B. the metal in quartz ampoule is fused into liquid under induced-current effect, and temperature is to 1500 DEG C, and induction coil passes into circulating water, is melted to appropriate viscosity.
C. rush argon gas by quartz ampoule head pipeline, be adjusted to suitable pressure differential, the metal liquid melted 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. the thin plate of 2.0mm thickness cooling velocity is obtained.
F. use the structure of tem analysis thin plate, in tissue containing alpha martensite and
ε-martensite, tensile property 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, particle diameter is about 1-2mm, mixes the quartz ampoule putting into vacuum spray to cast system;
B. the metal in quartz ampoule is fused into liquid under induced-current effect, and temperature is to 1500 DEG C, and induction coil passes into circulating water, is melted to appropriate viscosity;
C. rush argon gas by quartz ampoule head pipeline, be adjusted to suitable pressure differential, the metal liquid melted 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. the thin plate of 2.0mm thickness cooling velocity is obtained;
F. use the structure organization of tem analysis thin plate, microscopic structure is
ε-martensite, and have a small amount of fault in the middle of martensite, be illustrated in figure 2 the mechanical property of alloy tensile.
Claims (2)
1. the method for metastable phase engineering material is prepared by control solidi fication process, be characterised in that the shaped volumes of controlled cooling model speed, thermograde, material in Material Coagulating Process, heating-up temperature and pulling rate influence factor, the metastable phase that control material solidification obtains and tissue, the method comprises following operating procedure:
A. with ferrimanganic carbon for ternary alloy three-partalloy prepared by raw material, mass ratio is iron 79.9%-98%, manganese 2.0%-18.0%, carbon 0%-2.1%, each constituent mass sum 100%;
B. added with graininess in the quartz ampoule of vacuum spray to cast system by raw material, granular size is 1-2mm, and gross mass is 10g;
C. use sense induced current is heated to 1400 DEG C-1600 DEG C, melts to appropriate viscosity;
D. rush argon gas by quartz ampoule head pipeline, be adjusted to suitable pressure differential, molten metal liquid is injected copper mold, and cavity size is 1-4mm, thus obtains different cooldown rates;
E. obtain tensile strength 798.88MPa-923.60MPa, percentage elongation is 16.82%-61.26%, and intensity amasss the thin plate of the 1-4mm thickness reaching 56GPa%.
2. the method being prepared metastable phase engineering material by control solidi fication process according to claim 1, it is characterized in that material directly obtains α '-martensite and ε-martensite metastable phase and metastable organization under quick and Sub realizable fuzzy matrix, obtain the metastable phase material of very-high performance, without the need to subsequent heat treatment.
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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 |
| 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 |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3858551B2 (en) * | 1999-02-09 | 2006-12-13 | Ｊｆｅスチール株式会社 | High-tensile hot-rolled steel sheet excellent in bake hardenability, fatigue resistance, impact resistance and room temperature aging resistance and method for producing the same |
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Patent Citations (6)
| 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 |
| 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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