CN114250350A - Pt-10Ir-15Ag合金箔材加工方法 - Google Patents
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- 229910045601 alloy Inorganic materials 0.000 title claims abstract description 37
- 239000000956 alloy Substances 0.000 title claims abstract description 37
- 238000000034 method Methods 0.000 title claims abstract description 17
- 239000011888 foil Substances 0.000 title abstract description 4
- 238000005096 rolling process Methods 0.000 claims abstract description 12
- 238000007711 solidification Methods 0.000 claims abstract description 10
- 230000008023 solidification Effects 0.000 claims abstract description 10
- 238000000265 homogenisation Methods 0.000 claims abstract description 7
- 230000006872 improvement Effects 0.000 claims abstract description 7
- 230000008569 process Effects 0.000 claims abstract description 7
- 238000003672 processing method Methods 0.000 claims abstract description 7
- 238000005242 forging Methods 0.000 claims abstract description 6
- 238000003723 Smelting Methods 0.000 claims abstract description 4
- 238000000137 annealing Methods 0.000 claims description 22
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 claims description 6
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 4
- 238000001816 cooling Methods 0.000 claims description 4
- 229910052802 copper Inorganic materials 0.000 claims description 4
- 239000010949 copper Substances 0.000 claims description 4
- 229910052786 argon Inorganic materials 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 3
- 238000005498 polishing Methods 0.000 claims description 3
- 238000010438 heat treatment Methods 0.000 abstract 1
- 239000007789 gas Substances 0.000 description 6
- 238000005204 segregation Methods 0.000 description 5
- 239000013078 crystal Substances 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Substances [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 3
- 229910052709 silver Inorganic materials 0.000 description 3
- 229910001316 Ag alloy Inorganic materials 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000002425 crystallisation Methods 0.000 description 2
- 230000008025 crystallization Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 229910052741 iridium Inorganic materials 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 229910052697 platinum Inorganic materials 0.000 description 2
- KTCJPIFPOGZOAE-UHFFFAOYSA-N [Ag].[Ir].[Pt] Chemical compound [Ag].[Ir].[Pt] KTCJPIFPOGZOAE-UHFFFAOYSA-N 0.000 description 1
- 238000005275 alloying Methods 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 229910002058 ternary alloy Inorganic materials 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B1/00—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
- B21B1/40—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling foils which present special problems, e.g. because of thinness
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B3/00—Rolling materials of special alloys so far as the composition of the alloy requires or permits special rolling methods or sequences ; Rolling of aluminium, copper, zinc or other non-ferrous metals
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D27/00—Treating the metal in the mould while it is molten or ductile ; Pressure or vacuum casting
- B22D27/04—Influencing the temperature of the metal, e.g. by heating or cooling the mould
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D27/00—Treating the metal in the mould while it is molten or ductile ; Pressure or vacuum casting
- B22D27/04—Influencing the temperature of the metal, e.g. by heating or cooling the mould
- B22D27/045—Directionally solidified castings
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/26—Methods of annealing
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C1/00—Making non-ferrous alloys
- C22C1/02—Making non-ferrous alloys by melting
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
- C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
- C22F1/02—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working in inert or controlled atmosphere or vacuum
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
- C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
- C22F1/14—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of noble metals or alloys based thereon
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C5/00—Alloys based on noble metals
- C22C5/04—Alloys based on a platinum group metal
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Abstract
本发明提出一种Pt‑10Ir‑15Ag合金加工方法,通过优化后的熔炼、凝固、开坯锻造、轧制、热处理工艺,制备符技术要求的Pt‑10Ir‑15Ag合金箔材,实现合金的成分均匀化及组织改善。
Description
技术领域
本发明涉及合金加工技术领域,具体涉及一种Pt-10Ir-15Ag合金箔材加工方法。
背景技术
通常铂铱银(Pt-10Ir-15Ag)合金难以加工,原因主要在于:1、三组元Pt,Ir和Ag熔点温度相差极大(Pt:1769℃、Ir2410℃、Ag:962℃),且Ag的蒸气压高,合金化时Ag挥发严重,成分难以精确控制;同时,Pt,Ir和Ag的比重相差悬殊,也容易产生成分偏析。2.合金的固、液相线间隔大,且存在包晶反应,造成晶粒之间成分偏析严重。3.Ag在液态时吸气严重,且温度越高吸气越多,Pt-10Ir-15Ag合金液相线在1850℃左右,结晶温度范围大(约700℃),合金熔体里吸收了大量气体,浇铸成锭时气体难以完全排出,容易造成铸锭内部存在气孔等缺陷。4.固态合金相变复杂,在1700℃时发生有序转变。
由于Pt-10Ir-15Ag合金铸态在晶粒内外和晶粒之间都存在复杂的包晶反应,且高温下Ag容易挥发吸气,因此,Pt-10Ir-15Ag合金铸态组织较为复杂,存在成分偏析、疏松和气孔等缺陷,低温下容易出现高强度的脆性有序相。通过均匀化扩散退火可消除或者减少包晶偏析,但组织内部的疏松和气孔很难消除。凝固工艺对合金的微观组织、致密性和成分一致性有较大的影响,进而对合金加工性能有极大的影响。通过研究水冷铜模浇注、定向凝固、特殊方法凝固等凝固方法对合金微观组织的影响,实现合金的成分均匀化及组织改善。
为了解决Pt-10Ir-15Ag合金加工的技术难题,国内外相关研究单位在Pt-Ag合金中添加Pd而制成PtPdAg三元合金,据报道Pd可使Pt-(20~25)Ag合金的结晶温度从400℃减小到200℃,成分偏析减少,加工性能得到改善,研制了Pt-(20~30)Pd-10Ag、Pt-10Pd-20Ag,但PtPdAg的综合性能不如Pt-10Ir-15Ag。
发明内容
本发明的目的是提供一种Pt-10Ir-15Ag合金加工方法,实现合金的成分均匀化及组织改善。
为解决上述技术问题,本发明提供一种Pt-10Ir-15Ag合金加工方法,其包括:
第一步,配料;
第二步,熔炼;
第三步,凝固;
第四步,开坯锻造;
第五步,轧制;
第六步,退火。
所述第三步中,凝固方法可以通过水冷铜模浇注或定向凝固,实现合金成分均匀化和组织改善。
所述第四步中,开坯锻造的温度优选为1700℃-1800℃。
所述第五步中,采用多次轧制,轧制道次加工率控制在7%~12%,总加工率达到56%~70%时,对Pt-10Ir-15Ag合金进行退火处理。
所述第六步中,退火温度850~920℃,第一次退火时间为60-120min,后续轧制退火时间为20-40min;每次退火后应打磨铸锭表面,去除表面的少量氧化皮,退火过程中通氩气保护。
本发明的有益效果
本发明提供一种Pt-10Ir-15Ag合金加工方法,实现合金的成分均匀化及组织改善。
具体实施方式
以下采用实施例来详细说明本发明的实施方式,借此对本发明如何应用技术手段来解决技术问题,并达成技术效果的实现过程能充分理解并据以实施。
本发明提供一种Pt-10Ir-15Ag合金加工方法,其包括:第一步,配料;第二步,熔炼;第二步,凝固,通过水冷铜模浇注或定向凝固,实现合金成分均匀化和组织改善;第三步,开坯锻造,温度为1700℃;第四步,轧制,采用多次轧制,轧制道次加工率控制在7%~12%,总加工率达到56%~70%时,对Pt-10Ir-15Ag合金进行退火处理;第五步,退火,退火温度850~920℃,第一次退火时间为60-120min,后续轧制退火时间为20-40min;每次退火后应打磨铸锭表面,去除表面的少量氧化皮,退火过程中通氩气保护。
所有上述的首要实施这一知识产权,并没有设定限制其他形式的实施这种新产品和/或新方法。本领域技术人员将利用这一重要信息,上述内容修改,以实现类似的执行情况。但是,所有修改或改造基于本发明新产品属于保留的权利。
以上所述,仅是本发明的较佳实施例而已,并非是对本发明作其它形式的限制,任何熟悉本专业的技术人员可能利用上述揭示的技术内容加以变更或改型为等同变化的等效实施例。但是凡是未脱离本发明技术方案内容,依据本发明的技术实质对以上实施例所作的任何简单修改、等同变化与改型,仍属于本发明技术方案的保护范围。
Claims (5)
1.一种Pt-10Ir-15Ag合金加工方法,其特征在于,包括:
第一步,配料;
第二步,熔炼;
第三步,凝固;
第四步,开坯锻造;
第五步,轧制;
第六步,退火。
2.如权利要求1所述Pt-10Ir-15Ag合金加工方法,其特征在于:所述第三步中,凝固方法可以通过水冷铜模浇注或定向凝固,实现合金成分均匀化和组织改善。
3.如权利要求1所述Pt-10Ir-15Ag合金加工方法,其特征在于:所述第四步中,开坯锻造的温度优选为1700℃-1800℃。
4.如权利要求1所述Pt-10Ir-15Ag合金加工方法,其特征在于:所述第五步中,采用多次轧制,轧制道次加工率控制在7%~12%,总加工率达到56%~70%时,对Pt-10Ir-15Ag合金进行退火处理。
5.如权利要求1所述Pt-10Ir-15Ag合金加工方法,其特征在于:所述第六步中,退火温度850~920℃,第一次退火时间为60-120min,后续轧制退火时间为20-40min;每次退火后应打磨铸锭表面,去除表面的少量氧化皮,退火过程中通氩气保护。
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Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2012125516A2 (en) * | 2011-03-11 | 2012-09-20 | Kf Licensing, Inc. | Tarnish-resistant sterling silver alloys |
JP2019122980A (ja) * | 2018-01-16 | 2019-07-25 | 株式会社神戸製鋼所 | 高融点活性金属の合金からなる鋳塊、および、その製造方法 |
CN112680680A (zh) * | 2020-12-07 | 2021-04-20 | 有研亿金新材料有限公司 | 一种Pt-25Ag合金材料的加工方法 |
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- 2021-12-28 CN CN202111626491.7A patent/CN114250350A/zh active Pending
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2012125516A2 (en) * | 2011-03-11 | 2012-09-20 | Kf Licensing, Inc. | Tarnish-resistant sterling silver alloys |
JP2019122980A (ja) * | 2018-01-16 | 2019-07-25 | 株式会社神戸製鋼所 | 高融点活性金属の合金からなる鋳塊、および、その製造方法 |
CN112680680A (zh) * | 2020-12-07 | 2021-04-20 | 有研亿金新材料有限公司 | 一种Pt-25Ag合金材料的加工方法 |
Non-Patent Citations (2)
Title |
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侯智超;罗瑶;滕海涛;李勇军;吕保国;王鹏;: "铂银合金超细丝材制备及研究", 贵金属, no. 1, pages 48 - 50 * |
赵君辙;尹俊美;申丽琴;杨丽娟;万吉高;武海军;: "铂银合金的组织与性能", 贵金属, no. 04, pages 10 - 15 * |
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