CN1115421C - 以铝化钛为基础的合金 - Google Patents

以铝化钛为基础的合金 Download PDF

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Publication number
CN1115421C
CN1115421C CN98810144A CN98810144A CN1115421C CN 1115421 C CN1115421 C CN 1115421C CN 98810144 A CN98810144 A CN 98810144A CN 98810144 A CN98810144 A CN 98810144A CN 1115421 C CN1115421 C CN 1115421C
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alloy
present
titanium
alloy based
titanium aluminide
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CN1276021A (zh
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乔纳森·保罗
弗里茨·阿佩尔
理查德·瓦格纳
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GKSS Forshungszentrum Geesthacht GmbH
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GKSS Forshungszentrum Geesthacht GmbH
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    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C14/00—Alloys based on titanium

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Turbine Rotor Nozzle Sealing (AREA)
  • Powder Metallurgy (AREA)
  • Solid-Phase Diffusion Into Metallic Material Surfaces (AREA)
  • Manufacture Of Alloys Or Alloy Compounds (AREA)
  • Materials For Medical Uses (AREA)
  • Chemical Treatment Of Metals (AREA)

Abstract

本发明涉及一种以铝化钛为基础的合金，而且该合金的组成为钛、铝和铌。

Description

以铝化钛为基础的合金
本发明涉及以铝化钛为基础的合金。
众所周知，以铝化钛为基础的合金是为了以下目的，其中一方面是重量必须非常轻，另一方面是工件的强度必须高。因此，以铝化钛为基础的合金已通常替代了目前仍为单一组分的以镍为基础的常规超级合金，例如用于涡轮机中的涡轮叶片。
以铝化钛为基础的合金虽然在具有高强度的同时重量较轻，但通常并不是在任何情况下都具有目前已知超级合金所具有的所有性质，而且到目前为止尚不能完全满足所述超级合金规定的高技术标准。目前已知的以铝化钛为基础的合金的主要缺陷在于，强度性质从700℃的工作温度就开始产生明显的下降。这在低变形速度时尤为明显，而低变形速度在蠕变条件下对于材料应力是特征性的。
因此，本发明的目的是提供一种以铝化钛为基础但没有上述缺陷的合金，也就是说具有高温度强度的合金，其适合于作为镍基合金的替代品。根据本发明的合金制造简单而且成本低廉，并可简单地按比例进行加工。
根据本发明的目的是通过由钛、铝和铌组成的合金组合物解决的。
本发明之解决方案的优点是如以下实验所示，在900℃或更高的温度范围时，即本发明的合金在其中工作的温度下，仍可明显地达到高强度，更确切地说是与目前以通常使用的铝化钛混合物为基础的已知合金正相反。
本发明提出的解决方法案的另一个优点是，根据本发明的合金的耐氧化性远远高于现有技术中的已知合金混合物，也就是说相对于本领域中的已知合金，根据本发明的合金基于其更高的温度稳定性有助于实现目前由镍基超级合金或镍基合金都不能胜任的技术方案。
为进一步提高合金的强度，优选在钛、铝和铌的合金组合物中再添加选自硼和/或碳的组分，合金由此还适合于其他的使用情况，例如用于民用和军用飞机的喷气发动机的大功率涡轮机中。
实验证实，选择合金中的硼和/或碳组分的浓度低于0.5原子％是有利的。
合金中的铌组分是可变的，但优选在5≤x≤10，其中合金的组成相应于Ti-45Al-xNb。
现参考两个附图来描述本发明。图中：
图1是在压力实验中测量的本发明合金以及以铝化钛为基础的已知合金相对于温度的流动阻力变化。
图2是根据本发明的不同合金以及以铝化钛为基础并带有其他组成的已知合金在压力下1.25％塑性变形后的活化体积倒数(1/V)。
上述附图表明，根据本发明的合金的强度值远远高于常规合金。但同时，本发明合金的活化体积倒数可以与常规合金相媲美。这表明除钛和铝外还包括铌的合金即使在高温和低变形速度时也能实现高强度。
通过使用常规的冶金浇铸法或者已知的粉末冶金技术即可制得根据本发明的合金，其组成为Ti-45Al-xNb，其中5≤x≤10。然后可通过例如热锻、热压如热挤压以及热轧来加工。
除合金的基础组分钛、铝和铌外，为提高由该合金制成的物体在高工作温度下的强度，例如在900℃下，可在该合金中加入其量低于0.5原子％的硼和/或碳。

Claims (1)

1、一种以铝化钛为基础的合金，其特征在于，所述合金的组成为Ti-45Al-xNb，其中5≤x≤10，并且该合金中包含硼和/或碳，该硼和/或碳的含量低于0.5原子％。
CN98810144A 1997-08-19 1998-08-12 以铝化钛为基础的合金 Expired - Lifetime CN1115421C (zh)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19735841.1 1997-08-19
DE19735841A DE19735841A1 (de) 1997-08-19 1997-08-19 Legierung auf der Basis von Titanaluminiden

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CN1276021A CN1276021A (zh) 2000-12-06
CN1115421C true CN1115421C (zh) 2003-07-23

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US (1) US6524407B1 (zh)
EP (1) EP1015650B1 (zh)
CN (1) CN1115421C (zh)
AT (1) ATE257521T1 (zh)
DE (2) DE19735841A1 (zh)
RU (1) RU2203339C2 (zh)
WO (1) WO1999009228A1 (zh)

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DE10058155A1 (de) * 2000-11-22 2002-05-23 Geesthacht Gkss Forschung Legierung auf der Basis von Titanaluminiden
DE102004056582B4 (de) * 2004-11-23 2008-06-26 Gkss-Forschungszentrum Geesthacht Gmbh Legierung auf der Basis von Titanaluminiden
DE102007060587B4 (de) 2007-12-13 2013-01-31 Helmholtz-Zentrum Geesthacht Zentrum für Material- und Küstenforschung GmbH Titanaluminidlegierungen
US8858697B2 (en) 2011-10-28 2014-10-14 General Electric Company Mold compositions
US9011205B2 (en) 2012-02-15 2015-04-21 General Electric Company Titanium aluminide article with improved surface finish
US8932518B2 (en) 2012-02-29 2015-01-13 General Electric Company Mold and facecoat compositions
US8906292B2 (en) 2012-07-27 2014-12-09 General Electric Company Crucible and facecoat compositions
US8708033B2 (en) 2012-08-29 2014-04-29 General Electric Company Calcium titanate containing mold compositions and methods for casting titanium and titanium aluminide alloys
US8992824B2 (en) 2012-12-04 2015-03-31 General Electric Company Crucible and extrinsic facecoat compositions
CN103060610A (zh) * 2012-12-28 2013-04-24 洛阳双瑞精铸钛业有限公司 一种含有微量碳的钛铝合金用于制备薄壁叶片的熔铸方法
US9592548B2 (en) 2013-01-29 2017-03-14 General Electric Company Calcium hexaluminate-containing mold and facecoat compositions and methods for casting titanium and titanium aluminide alloys
RU2520250C1 (ru) * 2013-03-14 2014-06-20 Федеральное государственное автономное образовательное учреждение высшего профессионального образования "Национальный исследовательский технологический университет "МИСиС" Сплав на основе гамма алюминида титана
US9511417B2 (en) 2013-11-26 2016-12-06 General Electric Company Silicon carbide-containing mold and facecoat compositions and methods for casting titanium and titanium aluminide alloys
US9192983B2 (en) 2013-11-26 2015-11-24 General Electric Company Silicon carbide-containing mold and facecoat compositions and methods for casting titanium and titanium aluminide alloys
US10391547B2 (en) 2014-06-04 2019-08-27 General Electric Company Casting mold of grading with silicon carbide
RU2592657C2 (ru) * 2014-12-29 2016-07-27 Федеральное государственное унитарное предприятие "Всероссийский научно-исследовательский институт авиационных материалов" (ФГУП "ВИАМ") Жаропрочный сплав на основе титана и изделие, выполненное из него
EP3249064A1 (de) 2016-05-23 2017-11-29 MTU Aero Engines GmbH Additive fertigung von hochtemperaturbauteilen aus tial
EP3326746A1 (en) 2016-11-25 2018-05-30 Helmholtz-Zentrum Geesthacht Zentrum für Material- und Küstenforschung GmbH Method for joining and/or repairing substrates of titanium aluminide alloys
CN107699738A (zh) * 2017-09-29 2018-02-16 成都露思特新材料科技有限公司 一种细晶TiAl合金及其制备方法、航空发动机、汽车

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WO1999009228A1 (de) 1999-02-25
ATE257521T1 (de) 2004-01-15
DE59810561D1 (de) 2004-02-12
DE19735841A1 (de) 1999-02-25
US6524407B1 (en) 2003-02-25
RU2203339C2 (ru) 2003-04-27
EP1015650A1 (de) 2000-07-05
EP1015650B1 (de) 2004-01-07
CN1276021A (zh) 2000-12-06

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