CN103014531A - High-damping alloy for casting Fe-Cr-Mo and preparation method thereof - Google Patents
High-damping alloy for casting Fe-Cr-Mo and preparation method thereof Download PDFInfo
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Abstract
The invention discloses a high-damping alloy for casting Fe-Cr-Mo and a preparation method thereof, wherein the alloy consists of the following components by mass percentage: 15-17% of Cr, 2-3% of Mo, 0-1% of Mn, 0-1% of Si, 1-2% of Ni, 0.1-1.5% of Cu, 0.1-1% of Al, 0-0.5% of B, 0-0.5% of V, 0-1% of Nb, 0-1% of Ti, 0-0.1% of C and the balance of Fe. The alloy disclosed by the invention is more excellent than the known Fe-Cr-Mo-type deforming damping alloy in mechanical performance and damping performance, and can be widely applied to mechanical and electrical products with vibration and noise problems, particularly to the transmission, vibration and impact pieces of the mechanical equipment; and the alloy can remarkably enhance the vibration and noise reduction capacities of the mechanical equipment.
Description
Technical field:
The present invention relates to cast mechanical property, the damping capacity of Fe-Cr-Mo high damping alloy, improvement technology and the alloy technology of preparing of castability, more accurate theory, relate to the technique means such as alloying, microalloying and improve the castability of mechanical property, damping capacity and the alloy of alloy, said alloy and mechanical castings thereof reach the level of Fe-16Cr-2.5Mo ternary distortion high damping alloy, and have better damping capacity.
Technical background:
The development of modern science and technology promotes the quick raising of mechanical means power and running speed, and the vibration and the sound pollution that cause are thus polluted the three large public hazards that are regarded as the world today with topsoil, water.Aspect industrial production, vibration and noise have a strong impact on the quality of product, the precision of instrument and the work-ing life of mechanical means.From this angle of people, vibration and sound pollution are not only destroyed human living environment, also the serious harm mankind's physical and mental health.Therefore, vibration and noise reducing improves man-machine Working environment, becomes the important subject of current researcher.
Conventional vibration and noise reducing measure increases quality and improves rigidity as adopting, and improves design and avoids resonance, sets up damping shock absorber equipment etc. and does not meet equipment miniaturization, light-weighted development trend, and can't satisfy New Equipments to the control requirement of vibration and noise.The damping alloy that employing has the vibration and noise reducing function prepares vibration and the noise level that vibrating mass can directly reduce from the vibration root equipment, is control vibration and noise the most basic the most direct measure.
Fe-Cr-Mo is high damping alloy owing to have good damping capacity and mechanical property simultaneously, has obtained research and application at home and abroad.Be that the research of high damping alloy mainly concentrates on the deforming alloy about Fe-Cr-Mo at present, having no about casting Fe-Cr-Mo is research and the relevant report of high damping alloy.And the vibration sounding parts of mechanical means adopt castmethod to be shaped greatly, and there is the demand of vibration and noise reducing equally in this base part.Therefore, research and development casting Fe-Cr-Mo is high damping alloy, is used for the production of cast form parts, is the active demand of noise reduction technology, also is the important development direction of damping alloy research and development.
Fe-Cr-Mo is that the high damping alloy microstructure is single ferritic phase, the ferrite inherent grain size is large, solidified structure easily produces the mechanical property that coarse grain affects alloy, deforming alloy makes grain refining in plastic processing, improved the obdurability of alloy, and casting alloy does not have deformation process, can't change solidified structure.And casting alloy does not undergo phase transition in heat treatment process, is difficult to adjust by thermal treatment the performance of alloy.In addition, the castability of this type of alloy is relatively poor, and it is relatively poor to be embodied in the mobile property of liquid metal, and cavity filling ability is bad, is easy to roll up gas, shrinkage porosite.The damping capacity of Fe-Cr-Mo ternary alloy casting alloy sample is suitable with the damping capacity of deforming alloy sample, but mechanical property is lower by 10% than deforming alloy sample, is difficult to reach structural part to the requirement of mechanical property.
Summary of the invention:
The purpose of this invention is to provide a kind of casting Fe-Cr-Mo high damping alloy that has simultaneously good damping capacity, mechanical property, forming property and preparation method thereof.
The objective of the invention is to be achieved through the following technical solutions:
A kind of casting Fe-Cr-Mo high damping alloy, it is characterized in that: this alloy contains 15 ~ 17%Cr, 2 ~ 3%Mo, 0 ~ 1%Mn, 0 ~ 1%Si, 1 ~ 2%Ni, 0.1 ~ 1.5%Cu, 0.1 ~ 1%Al, 0 ~ 0.5%B, 0 ~ 0.5%V, 0 ~ 1%Nb, 0 ~ 1%Ti, 0 ~ 0.1%C, surplus is Fe, and above-mentioned per-cent is mass percent.
A kind of preparation method who casts the Fe-Cr-Mo high damping alloy is characterized in that comprising following processing step:
1, alloy adopts vacuum induction melting, at first 70 ~ 82%Fe, 15 ~ 17%Cr, 2 ~ 3%Mo, 0 ~ 1%Si, 1 ~ 2%Ni, 0.1 ~ 1%AL, 0 ~ 0.5%B, 0 ~ 0.5%V, 0 ~ 1%Nb, 0 ~ 0.1%C are added in the crucible, furnace charge guarantees closely in crucible as far as possible, vacuumize first before the furnace charge fusing, make the interior vacuum tightness of stove maintain higher level
After metal liquefaction is clear, the beginning refining, 1600 ℃～1650 ℃ of refining temperatures adopt secondary refining further to improve the molten metal purity, add easy scaling loss element 0 ~ 1%Mn, 0.1 ~ 1.5%Cu and 0 ~ 1%Ti before coming out of the stove, charged cast, 1550 ℃ of teeming temperatures again.Alloy heat treatment process is homogenizing annealing, and annealing process is that stove is cold behind 1000 ℃ of insulation 1h; Above-mentioned per-cent is mass percent.
The basic ingredient of the present invention take Fe, Cr, three kinds of elements of Mo as casting alloy improves castability, mechanical property, the damping capacity of alloy by adding alloying element, microalloy element.Fe-Cr-Mo is that high damping alloy belongs to the ferromagnetic type damping alloy, and what play damping action mainly is ferritic phase in the alloy, impurity element, second equate all can the grievous injury alloy damping capacity.Therefore from the damping capacity angle design, alloy substrate should be single ferrite, but single ferritic phase exists castability poor, and the casting alloy mechanical property can't be by problems such as thermal treatment improvement.The present invention takes following measures in order to make casting alloy satisfy simultaneously high damping properties, mechanical property and good plasticity:
1, improves the alloy purity, reduce to damage the impurity elements such as C, N, O of alloy damping characteristic and plasticity and toughness;
2, interpolation improves the elements such as Mn, Si of alloy casting performance in right amount with the castability of modified alloy;
3, add and to improve in right amount alloy microstructure, such as elements such as Ni, the Ti of control grain-size, Nb to carry heavy alloyed mechanical property and damping capacity; Add and improve the elements such as Cu of alloy iron magnetic property to carry heavy alloyed damping capacity.
4, by optimizing thermal treatment process, control heating-cooling process is eliminated casting stress, and avoids the generation of fragility phase in the heat treatment process.
Beneficial effect:
1, alloy of the present invention belongs to a kind of novel casting damping alloy, and having remedied Fe-Cr-Mo is that damping alloy is in the blank in cast form field;
2, the castability of alloy of the present invention obviously is better than Fe-Cr-Mo ternary casting alloy, by to casting Fe-Cr-Mo high damping alloy sample appearance and Microstructure observation, the casting flaws such as the volume gas that Fe-Cr-Mo ternary casting alloy exists, shrinkage cavity and porosity be improved significantly;
3, the mechanical property of alloy of the present invention and damping capacity all are not less than Fe-16Cr-2.5Mo ternary distortion high damping alloy;
4, alloy of the present invention can satisfy conventional structure spare to the requirement of mechanical property, and damping capacity obviously is better than the common metal material, is applicable to the manufacturing that there are the cast form parts of an urgent demand the vibration and noise reducing aspect.
The in-fighting Q of alloy of the present invention
-1In TA-Q800 type dynamic mechanical analysis instrument (DMA) test, adopt two cantilever vibration patterns, vibrational frequency 1Hz, 25 ℃ of test environment temperature, mechanical property is tested at electronic universal tester.Test result is the in-fighting value Q of alloy
-1Reach 45 * 10
-3More than, tensile strength reaches 460MPa, and unit elongation is more than 20%.
Description of drawings:
Fig. 1 is Fe-Cr-Mo ternary deforming alloy, Fe-Cr-Mo ternary casting alloy and the present invention damping of casting the Fe-Cr-Mo damping alloy-strain amplitude curve.
Fig. 2 is the tensile strength that Fe-Cr-Mo ternary deforming alloy, Fe-Cr-Mo ternary casting alloy and the present invention cast the Fe-Cr-Mo damping alloy.
Embodiment:
Embodiment one
A kind of casting Fe-Cr-Mo high damping alloy, its composition is: by percentage to the quality 15-17% Cr, 2-3%Mo, 0.1-1%Mn, 0.1-1%Si, surplus is Fe.
Embodiment two
A kind of casting Fe-Cr-Mo high damping alloy, its composition is: by percentage to the quality 15-17% Cr, 2-3%Mo, 0.1-1%Mn, 0.1-1%Si, 0.1-1.5%Cu, 0.1-1%Ae, surplus is Fe.
Embodiment three
A kind of casting Fe-Cr-Mo high damping alloy is characterized in that this alloying constituent, and Cr content is that 15.79%, Mo content is 2.30% by percentage to the quality, Mn content is that 0.51%, Si content is that 0.87%, Ni content is 1.54%, Cu content is that 0.54%, C content is 0.06%, Fe surplus.The tensile strength of alloy can reach 430MPa, and the damping peak value can reach 54 * 10
-3
Embodiment four
A kind of casting Fe-Cr-Mo high damping alloy, its concrete composition is: Cr content is that 16.23%, Mo content is that 2.67%, Mn content is 0.58% by percentage to the quality, Si content is that 0.79%, Ni content is that 1.22%, Cu content is 0.26%, Nb content is that 0.44%, C content is 0.07%, Fe surplus.The tensile strength of alloy can reach 460MPa, and the damping peak value can reach 51 * 10
-3
Claims (6)
1. cast the Fe-Cr-Mo high damping alloy for one kind, it is characterized in that: this alloy contains 15 ~ 17%Cr, 2 ~ 3%Mo, 0 ~ 1%Mn, 0 ~ 1%Si, 1 ~ 2%Ni, 0.1 ~ 1.5%Cu, 0.1 ~ 1%Al, 0 ~ 0.5%B, 0 ~ 0.5%V, 0 ~ 1%Nb, 0 ~ 1%Ti, 0 ~ 0.1%C, surplus is Fe, and above-mentioned per-cent is mass percent.
2. a kind of casting Fe-Cr-Mo high damping alloy according to claim 1, it is characterized in that composition is: contain by percentage to the quality 15-17% Cr, 2-3%Mo, 0.1-1%Mn, 0.1-1%Si, surplus is Fe.
3. a kind of casting Fe-Cr-Mo high damping alloy according to claim 1, it is characterized in that composition is: contain by percentage to the quality 15-17% Cr, 2-3%Mo, 0.1-1%Mn, 0.1-1%Si, 0.1-1.5%Cu, 0.1-1%Ae, surplus is Fe.
4. a kind of casting Fe-Cr-Mo high damping alloy according to claim 1, it is characterized in that composition is: containing by percentage to the quality Cr content is 15.79%, Mo content is 2.30%, Mn content is 0.51%, Si content is that 0.87%, Ni content is that 1.54%, Cu content is 0.54%, C content is 0.06%, Fe surplus; The tensile strength of alloy can reach 430MPa, and the damping peak value can reach 54 * 10
-3
5. a kind of casting Fe-Cr-Mo high damping alloy according to claim 1, it is characterized in that: its concrete composition is: Cr content is 16.23% by percentage to the quality, Mo content is 2.67%, Mn content is that 0.58%, Si content is that 0.79%, Ni content is 1.22%, Cu content is 0.26%, Nb content is that 0.44%, C content is 0.07%, Fe surplus; The tensile strength of alloy can reach 460MPa, and the damping peak value can reach 51 * 10
-3
6. a kind of preparation method who casts the Fe-Cr-Mo high damping alloy according to claim 1 is characterized in that comprising following processing step:
Alloy adopts vacuum induction melting, at first with 70 ~ 82%Fe, 15 ~ 17%Cr, 2 ~ 3%Mo, 0 ~ 1%Si, 1 ~ 2%Ni, 0.1 ~ 1%Ae, 0 ~ 0.5%B, 0 ~ 0.5%V, 0 ~ 1%Nb, 0 ~ 0.1%C adds in the crucible, furnace charge guarantees closely in crucible as far as possible, vacuumize first before the furnace charge fusing, make the interior vacuum tightness of stove maintain higher level, after metal liquefaction is clear, the beginning refining, 1600 ℃～1650 ℃ of refining temperatures, adopt secondary refining further to improve the molten metal purity, add again easy scaling loss element 0 ~ 1%Mn before coming out of the stove, 0.1 ~ 1.5%Cu and 0 ~ 1%Ti, charged cast, 1550 ℃ of teeming temperatures; Alloy heat treatment process is homogenizing annealing, and annealing process is that stove is cold behind 1000 ℃ of insulation 1h; Above-mentioned per-cent is mass percent.
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103397254A (en) * | 2013-08-08 | 2013-11-20 | 常熟市东方特种金属材料厂 | Compound-type vibration and noise reduction function alloy |
| CN104726776A (en) * | 2015-02-10 | 2015-06-24 | 中国科学院金属研究所 | High-strength and high-damping Fe-Cr-Mo-Cu damping alloy and preparation method thereof |
| CN104832431A (en) * | 2015-04-14 | 2015-08-12 | 广东美芝制冷设备有限公司 | Rotary compressor and refrigeration equipment containing rotary compressor |
| CN105132853A (en) * | 2015-09-06 | 2015-12-09 | 天津大学 | Hard high-damping coating preparation process used for surface of high-temperature damping part |
| CN105401097A (en) * | 2015-11-28 | 2016-03-16 | 四川大学 | High-toughness casting Fe-Cr-Mo-based high-damping alloy and preparation method thereof |
| CN106283137A (en) * | 2016-08-25 | 2017-01-04 | 山东清大银光金属海绵新材料有限责任公司 | Silicon nitride crystal whisker strengthens the preparation of sponge structure sections chrome molybdenum hafnium alloy damping material |
| CN107964636A (en) * | 2016-10-20 | 2018-04-27 | 中国科学院金属研究所 | A kind of preparation method of high intensity, high-damping FeCrMoCu alloys |
| CN111139403A (en) * | 2019-12-17 | 2020-05-12 | 上大新材料(泰州)研究院有限公司 | Improved iron-based damping alloy and manufacturing method thereof |
| CN115595514A (en) * | 2022-10-17 | 2023-01-13 | 西南交通大学（Cn） | Multi-element casting-state Fe-Cr-based damping alloy and preparation method thereof |
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| CN1249357A (en) * | 1998-09-28 | 2000-04-05 | 中国科学院金属腐蚀与防护研究所 | Iron-based cast wear-resistant corrosion-resistant alloy |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103397254A (en) * | 2013-08-08 | 2013-11-20 | 常熟市东方特种金属材料厂 | Compound-type vibration and noise reduction function alloy |
| CN104726776A (en) * | 2015-02-10 | 2015-06-24 | 中国科学院金属研究所 | High-strength and high-damping Fe-Cr-Mo-Cu damping alloy and preparation method thereof |
| CN104832431A (en) * | 2015-04-14 | 2015-08-12 | 广东美芝制冷设备有限公司 | Rotary compressor and refrigeration equipment containing rotary compressor |
| CN105132853A (en) * | 2015-09-06 | 2015-12-09 | 天津大学 | Hard high-damping coating preparation process used for surface of high-temperature damping part |
| CN105401097A (en) * | 2015-11-28 | 2016-03-16 | 四川大学 | High-toughness casting Fe-Cr-Mo-based high-damping alloy and preparation method thereof |
| CN105401097B (en) * | 2015-11-28 | 2018-08-03 | 四川大学 | A kind of high tenacity casting Fe-Cr-Mo base high-damping alloys and preparation method thereof |
| CN106283137A (en) * | 2016-08-25 | 2017-01-04 | 山东清大银光金属海绵新材料有限责任公司 | Silicon nitride crystal whisker strengthens the preparation of sponge structure sections chrome molybdenum hafnium alloy damping material |
| CN106283137B (en) * | 2016-08-25 | 2018-03-02 | 山东清大银光金属海绵新材料有限责任公司 | Silicon nitride crystal whisker strengthens the preparation of sponge structure sections chrome molybdenum hafnium alloy damping material |
| CN107964636A (en) * | 2016-10-20 | 2018-04-27 | 中国科学院金属研究所 | A kind of preparation method of high intensity, high-damping FeCrMoCu alloys |
| CN111139403A (en) * | 2019-12-17 | 2020-05-12 | 上大新材料(泰州)研究院有限公司 | Improved iron-based damping alloy and manufacturing method thereof |
| CN115595514A (en) * | 2022-10-17 | 2023-01-13 | 西南交通大学（Cn） | Multi-element casting-state Fe-Cr-based damping alloy and preparation method thereof |
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Application publication date: 20130403 |