LIQUID PHASE DIFFUSION JOINING OF TITANIUM AND TITANIUM ALLOY

钛及钛合金的液相扩散连接

基本信息

  • 批准号:
    62460197
  • 负责人:
  • 金额:
    $ 3.78万
  • 依托单位:
  • 依托单位国家:
    日本
  • 项目类别:
    Grant-in-Aid for General Scientific Research (B)
  • 财政年份:
    1987
  • 资助国家:
    日本
  • 起止时间:
    1987 至 1988
  • 项目状态:
    已结题

项目摘要

Direct solid phase diffusion joining and liquid phase diffusion joining used titanium-base filler metals were carried out of beta-type titanium alloy whose compositions were of 75%Ti,21%V and 4%Al and their fundamental joinability was discussed. As a result,in the solid phase diffusion joining, an appreciably high bonding pressure was required to obtain a perfect bonded joint. On the other hand, in the ilquid phase diffusion joining with a titanuim-base filler metal of Ti-20Zr-20Cu-20Ni, a fair bonded joint was achieved by a low pressure and a short bonded time. Also an aging heat treatment after bonding was possible to be remarkably raised a tensile strength of the joint.Compared with the liquid phase diffusion joining of a heat resistant superalloy, in the liquid phase diffusion joining with the titanium-base filler metal,the joint of almost identical structure and composition with those of the base metal was obtained by considerably short bonded time. The isothermal solidification p … More rocess was exhibited to be diffusion controlled by depressant such as copper and nickel.Metallugical examination of a commercially pure titanium joint with the titaniumbase filler metal by using transmission electron microscopy revealed as follows.In holding at the joining temperature, diffusion of depressant of zircomnium,copper and nickel into the base metal, was isothermal solidified rapidly a liquid layer within joint area. The joint area was transformed into proeutectoid alpha-phase and eutectoid in cooling, which formed lameller and rod-like microstructure.Furthermore, in the joing of CPTi, an area of needle-like structure corresponded to that contained copper and nickel more than solid solute limit and according to diffusion progress of their elements during joining the width of area of eutectoid transformation increased initially. However,the width decreased with the lapse of holding time and disappered finally. This reason was clarifyed by metallugical examination and the diffusion theory. Less
对钛含量为75%,V为21%,Al为4%的贝塔型钛合金进行了直接固相扩散连接和液态扩散连接,并对其基本性能进行了讨论。因此,在固相扩散连接中,需要相当高的连接压力才能获得完美的连接接头。而钛基钛基钎料Ti-20Zr-20Cu-20Ni的液态相扩散连接,可以在较短的焊接时间和较低的焊接压力下获得较好的连接效果。与耐热高温合金的液态扩散连接相比,钛基钎焊液相扩散连接在较短的连接时间内获得了与母材组织和成分基本相同的接头。P-…等温凝固用透射电子显微镜对工业纯钛与钛基钎料的金相观察结果表明,在连接温度下,抑制剂锆、铜、镍在母材中的扩散迅速等温凝固为接头区域的液态层。结合区在冷却过程中转变为先共析的α相和共析组织,形成片状和棒状组织;此外,在CPTi的连接中,针状组织的区域对应于铜和镍含量超过固溶质极限的区域,并根据元素在加入过程中的扩散过程,初步增加了共析相变区的宽度。但随着保温时间的延长,宽度逐渐减小,最终消失。用金相检验和扩散理论解释了这一原因。较少

项目成果

期刊论文数量(12)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)
Tadao ONZAWA: "Liquid Phase Diffusion Joining of Ti-21V-4Albeta-titanium alloy with Titanium-Base Filler Metals." QUARTERLY JOURNAL OF JAPAN WELDING SOCIETY.
Tadao ONZAWA:“Ti-21V-4Albeta-钛合金与钛基填充金属的液相扩散连接。”
  • DOI:
  • 发表时间:
  • 期刊:
  • 影响因子:
    0
  • 作者:
  • 通讯作者:
恩澤忠男、鈴村暁男・高明玩: 溶接学会論文集.
Tadao Onzawa、Akio Suzumura 和 Gan Takaaki:日本焊接学会会议录。
  • DOI:
  • 发表时间:
  • 期刊:
  • 影响因子:
    0
  • 作者:
  • 通讯作者:
恩沢忠男、鈴村暁男、高明玩: 溶接学会論文集.
Tadao Onzawa、Akio Suzumura、Gan Takaaki:日本焊接学会会议录。
  • DOI:
  • 发表时间:
  • 期刊:
  • 影响因子:
    0
  • 作者:
  • 通讯作者:
Tadao ONZAWA: "Microstructure of Titanium Joint Made with Ti-Zr Base Brazing Fillers." QUARTERLY JOURNAL OF JAPAN WELDING SOCIETY.
Tadao ONZAWA:“用 Ti-Zr 基钎料制成的钛接头的微观结构。”
  • DOI:
  • 发表时间:
  • 期刊:
  • 影响因子:
    0
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ONZAWA Tadao其他文献

ONZAWA Tadao的其他文献

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{{ truncateString('ONZAWA Tadao', 18)}}的其他基金

Electrostatic manipulation of a micro-object by controlling applied voltage
通过控制施加电压对微型物体进行静电操纵
  • 批准号:
    15360133
  • 财政年份:
    2003
  • 资助金额:
    $ 3.78万
  • 项目类别:
    Grant-in-Aid for Scientific Research (B)
Exact reversiblity in joining and separation
连接和分离的精确可逆性
  • 批准号:
    13450292
  • 财政年份:
    2001
  • 资助金额:
    $ 3.78万
  • 项目类别:
    Grant-in-Aid for Scientific Research (B)
Joining system without heating and pressing
无需加热和加压的连接系统
  • 批准号:
    10555244
  • 财政年份:
    1998
  • 资助金额:
    $ 3.78万
  • 项目类别:
    Grant-in-Aid for Scientific Research (B)
Exact reversibility in joining and separation
连接和分离的精确可逆性
  • 批准号:
    10450267
  • 财政年份:
    1998
  • 资助金额:
    $ 3.78万
  • 项目类别:
    Grant-in-Aid for Scientific Research (B)
Adhesion force measurements in UHV chamber of surface analysis appararus
表面分析仪特高压室内粘附力测量
  • 批准号:
    07405033
  • 财政年份:
    1995
  • 资助金额:
    $ 3.78万
  • 项目类别:
    Grant-in-Aid for Scientific Research (A)
Widening of the joined interface by the procedure without heating and pressing
通过不加热、不加压的工序扩大接合界面
  • 批准号:
    07305058
  • 财政年份:
    1995
  • 资助金额:
    $ 3.78万
  • 项目类别:
    Grant-in-Aid for Scientific Research (A)
Measurement of Inter-materials forces by Atomic Force Microscopy (AFM) .
通过原子力显微镜 (AFM) 测量材料间的力。
  • 批准号:
    05452292
  • 财政年份:
    1993
  • 资助金额:
    $ 3.78万
  • 项目类别:
    Grant-in-Aid for General Scientific Research (B)
Research on Ti-Al inter metallic compound matrix FRM
Ti-Al金属间化合物基体FRM的研究
  • 批准号:
    03452261
  • 财政年份:
    1991
  • 资助金额:
    $ 3.78万
  • 项目类别:
    Grant-in-Aid for General Scientific Research (B)
Practicability of Liquid Phase Diffusion Welding by use of Amorphous Interlayers
非晶中间层液相扩散焊的实用性
  • 批准号:
    59850121
  • 财政年份:
    1984
  • 资助金额:
    $ 3.78万
  • 项目类别:
    Grant-in-Aid for Developmental Scientific Research
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