Dissolution Kinetics of Inclusions in Titanium Alloys

钛合金中夹杂物的溶解动力学

基本信息

  • 批准号:
    RGPIN-2017-03785
  • 负责人:
  • 金额:
    $ 1.75万
  • 依托单位:
  • 依托单位国家:
    加拿大
  • 项目类别:
    Discovery Grants Program - Individual
  • 财政年份:
    2018
  • 资助国家:
    加拿大
  • 起止时间:
    2018-01-01 至 2019-12-31
  • 项目状态:
    已结题

项目摘要

Titanium alloys are employed in a number industries of importance to Canada including, aerospace, medical, marine, chemical processing, oil and gas, food processing and automotive, often in critical applications. Various types of defects have been identified by the titanium industry and understanding the mechanisms by which these defects can be eliminated is therefore critically important in reducing the processing cost and improving the performance of titanium and its alloys. Two of the defects of concern are: 1) the Type-I, high interstitial defect; and 2) the Type II alpha stabilized defect. Both represent localized chemical in-homogeneities that when present can lead to a significant degradation in the mechanical performance of the alloy, particularly in applications involving cyclic loading. Various approaches are used commercially to avoid their occurrence including feedstock control and melt refining. In the melt consolidation processes, their effective removal hinges on sufficient time at temperature to allow chemical homogenization. ***The Type-I, Ti-N, defect is often referred to as the most troublesome, owing to the significant increase in melting temperature that arises at relatively low concentrations of nitrogen - e.g. the melting point increases from 1670 oC to over 2250 oC with as little as 5 wt% nitrogen in solution. As a consequence, this defect is extremely challenging to remove in the various commercial melt-consolidation technologies used in primary titanium processing, including Electron Beam Cold Hearth Remelting (EBCHR) and Plasma Arc Remelting (PAM). A second defect of concern is associated with the so-called condensate drop-in event, which can arise during the electron-beam processing of Al bearing Ti alloys. The condensate can contain 68 to 72% Al in the form of stoichiometric TiAl3 in an Al matrix. If the solid condensate enters the mould or refining hearth (the former being more problematic) and does not fully melt and homogenize, the result can be relative soft alpha-stabilized region. ***There is a pressing need for additional work of a fundamental nature to better understand the dissolution/melting of these defects in liquid titanium in order to design the next generation of innovative processes. To address the gaps in our knowledge, the proposed program of research involves conducting experiments on liquid titanium using the Electron Beam Button Furnace (EBBF) at UBC in which solid rods of the relevant compositions will be introduced and removed at various times to quantify the extent of dissolution/melting. Additionally, fundamentally-based numerical models will be developed to describe heat, mass, momentum and chemical species transport during the experimental program. This combined approach will yield critical information on the mechanisms controlling homogenization of these defects that is currently missing from the literature.
钛合金被用于许多对加拿大重要的行业,包括航空航天、医疗、船舶、化学加工、石油和天然气、食品加工和汽车,通常是关键应用。钛工业已经确定了各种类型的缺陷,因此了解消除这些缺陷的机理对于降低钛及其合金的加工成本和提高其性能至关重要。其中两个值得关注的缺陷是:1)I型,高间质缺陷;2)II型α稳定型缺陷。两者都代表局部化学不均匀,当存在时,会导致合金机械性能的显著下降,特别是在涉及循环加载的应用中。商业上使用了各种方法来避免它们的发生,包括原料控制和熔体精炼。在熔体固结过程中,它们的有效去除取决于在温度下有足够的时间允许化学均质。*I型钛氮缺陷通常被认为是最麻烦的,因为在相对较低的氮浓度下,熔化温度会显著提高-例如,熔点从1670 oC上升到2250 oC以上,而溶液中的氮只有5wt%。因此,在初级钛加工中使用的各种商业熔融固结技术(包括电子束冷炉重熔(EBCHR)和等离子弧重熔(PAM))中消除这一缺陷具有极大的挑战性。第二个令人担忧的缺陷与所谓的冷凝物掉落事件有关,该事件可能在含铝钛合金的电子束处理过程中发生。冷凝物可在铝基质中以化学计量比TiAl3的形式含有68%至72%的铝。如果固体冷凝液进入结晶器或精炼炉(前者问题更大),并且没有完全熔化和均化,结果可能是相对较软的阿尔法稳定区。*迫切需要更多的基础性工作,以便更好地了解液态钛中这些缺陷的溶解/熔化,以便设计下一代创新工艺。为了解决我们知识上的差距,拟议的研究计划涉及使用UBC的电子束按钮炉(EBBF)对液态钛进行实验,其中相关成分的固体棒将在不同时间被引入和移除,以量化溶解/熔化的程度。此外,将开发基于基础的数值模型来描述实验计划期间的热、质量、动量和化学物质的传输。这种结合的方法将产生关于控制这些缺陷同质化的机制的关键信息,这些信息目前在文献中缺失。

项目成果

期刊论文数量(0)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)

数据更新时间:{{ journalArticles.updateTime }}

{{ item.title }}
{{ item.translation_title }}
  • DOI:
    {{ item.doi }}
  • 发表时间:
    {{ item.publish_year }}
  • 期刊:
  • 影响因子:
    {{ item.factor }}
  • 作者:
    {{ item.authors }}
  • 通讯作者:
    {{ item.author }}

数据更新时间:{{ journalArticles.updateTime }}

{{ item.title }}
  • 作者:
    {{ item.author }}

数据更新时间:{{ monograph.updateTime }}

{{ item.title }}
  • 作者:
    {{ item.author }}

数据更新时间:{{ sciAawards.updateTime }}

{{ item.title }}
  • 作者:
    {{ item.author }}

数据更新时间:{{ conferencePapers.updateTime }}

{{ item.title }}
  • 作者:
    {{ item.author }}

数据更新时间:{{ patent.updateTime }}

Cockcroft, Steven其他文献

Cockcroft, Steven的其他文献

{{ item.title }}
{{ item.translation_title }}
  • DOI:
    {{ item.doi }}
  • 发表时间:
    {{ item.publish_year }}
  • 期刊:
  • 影响因子:
    {{ item.factor }}
  • 作者:
    {{ item.authors }}
  • 通讯作者:
    {{ item.author }}

{{ truncateString('Cockcroft, Steven', 18)}}的其他基金

Dissolution Kinetics of Inclusions in Titanium Alloys
钛合金中夹杂物的溶解动力学
  • 批准号:
    RGPIN-2017-03785
  • 财政年份:
    2021
  • 资助金额:
    $ 1.75万
  • 项目类别:
    Discovery Grants Program - Individual
Dissolution Kinetics of Inclusions in Titanium Alloys
钛合金中夹杂物的溶解动力学
  • 批准号:
    RGPIN-2017-03785
  • 财政年份:
    2020
  • 资助金额:
    $ 1.75万
  • 项目类别:
    Discovery Grants Program - Individual
Dissolution Kinetics of Inclusions in Titanium Alloys
钛合金中夹杂物的溶解动力学
  • 批准号:
    RGPIN-2017-03785
  • 财政年份:
    2019
  • 资助金额:
    $ 1.75万
  • 项目类别:
    Discovery Grants Program - Individual
Dissolution Kinetics of Inclusions in Titanium Alloys
钛合金中夹杂物的溶解动力学
  • 批准号:
    RGPIN-2017-03785
  • 财政年份:
    2017
  • 资助金额:
    $ 1.75万
  • 项目类别:
    Discovery Grants Program - Individual
Hot cracking in light metal alloys
轻金属合金的热裂纹
  • 批准号:
    121471-2007
  • 财政年份:
    2010
  • 资助金额:
    $ 1.75万
  • 项目类别:
    Discovery Grants Program - Individual
Hot cracking in light metal alloys
轻金属合金的热裂纹
  • 批准号:
    121471-2007
  • 财政年份:
    2009
  • 资助金额:
    $ 1.75万
  • 项目类别:
    Discovery Grants Program - Individual
Defect formation in light metal alloy castings
轻金属合金铸件缺陷的形成
  • 批准号:
    336849-2006
  • 财政年份:
    2009
  • 资助金额:
    $ 1.75万
  • 项目类别:
    Strategic Projects - Group
Hot cracking in light metal alloys
轻金属合金的热裂纹
  • 批准号:
    121471-2007
  • 财政年份:
    2008
  • 资助金额:
    $ 1.75万
  • 项目类别:
    Discovery Grants Program - Individual
Defect formation in light metal alloy castings
轻金属合金铸件缺陷的形成
  • 批准号:
    336849-2006
  • 财政年份:
    2007
  • 资助金额:
    $ 1.75万
  • 项目类别:
    Strategic Projects - Group
Hot cracking in light metal alloys
轻金属合金的热裂纹
  • 批准号:
    121471-2007
  • 财政年份:
    2007
  • 资助金额:
    $ 1.75万
  • 项目类别:
    Discovery Grants Program - Individual

相似国自然基金

基于Hydrodynamics-Reaction Kinetics耦合模型的厌氧膨胀床反应器三相流场数值模拟及生态-水力响应机制解析
  • 批准号:
    51078108
  • 批准年份:
    2010
  • 资助金额:
    36.0 万元
  • 项目类别:
    面上项目

相似海外基金

Molecular mechanisms that regulate the kinetics of neurotransmitter release
调节神经递质释放动力学的分子机制
  • 批准号:
    DP240102418
  • 财政年份:
    2024
  • 资助金额:
    $ 1.75万
  • 项目类别:
    Discovery Projects
In-situ X-ray Scattering Studies of Oxide Epitaxial Growth Kinetics and Dynamics
氧化物外延生长动力学和动力学的原位 X 射线散射研究
  • 批准号:
    2336506
  • 财政年份:
    2024
  • 资助金额:
    $ 1.75万
  • 项目类别:
    Continuing Grant
EAGER: Enhancement of Ammonia combustion by spatiotemporal control of plasma kinetics
EAGER:通过等离子体动力学的时空控制增强氨燃烧
  • 批准号:
    2337461
  • 财政年份:
    2024
  • 资助金额:
    $ 1.75万
  • 项目类别:
    Standard Grant
CAREER: Understanding the Impact of Dephosphorylation Kinetics and Adapter Specificity on Synthetic T Cell Receptor Signaling and Function
职业:了解去磷酸化动力学和接头特异性对合成 T 细胞受体信号传导和功能的影响
  • 批准号:
    2339172
  • 财政年份:
    2024
  • 资助金额:
    $ 1.75万
  • 项目类别:
    Continuing Grant
CAREER: Experimental Determination and Fundamental Theory of Mesoscopic Transport and Intrinsic Kinetics in CO2 Electrocatalysis
职业:二氧化碳电催化中介观输运和本征动力学的实验测定和基础理论
  • 批准号:
    2339693
  • 财政年份:
    2024
  • 资助金额:
    $ 1.75万
  • 项目类别:
    Continuing Grant
CAREER: Atomic-level understanding of stability and transition kinetics of 3-dimensional interfaces under irradiation
职业:对辐照下 3 维界面的稳定性和转变动力学的原子水平理解
  • 批准号:
    2340085
  • 财政年份:
    2024
  • 资助金额:
    $ 1.75万
  • 项目类别:
    Continuing Grant
Solvent Reorganization Effects on the Kinetics of Electrochemical Hydrogen Evolution
溶剂重组对电化学析氢动力学的影响
  • 批准号:
    2350501
  • 财政年份:
    2024
  • 资助金额:
    $ 1.75万
  • 项目类别:
    Standard Grant
Resolving the Shortcomings in Modern NH3 Kinetics Models using Detailed Species Time Histories and Direct Rate Measurements
使用详细的物种时间历史和直接速率测量解决现代 NH3 动力学模型的缺点
  • 批准号:
    2308433
  • 财政年份:
    2023
  • 资助金额:
    $ 1.75万
  • 项目类别:
    Standard Grant
Postdoctoral Fellowship: MPS-Ascend: Quantifying Accelerated Reaction Kinetics in Microdroplets with pH-Jump and Mass Spectrometry: From Small Molecules to Proteins and Beyond
博士后奖学金:MPS-Ascend:利用 pH 跳跃和质谱定量微滴中的加速反应动力学:从小分子到蛋白质及其他
  • 批准号:
    2316167
  • 财政年份:
    2023
  • 资助金额:
    $ 1.75万
  • 项目类别:
    Fellowship Award
Collaborative Research: Overlooked Oxidation of Aqueous Alcohols: Kinetics, Mechanism, and Relevance to Water Reuse
合作研究:被忽视的水醇氧化:动力学、机制以及与水回用的相关性
  • 批准号:
    2304861
  • 财政年份:
    2023
  • 资助金额:
    $ 1.75万
  • 项目类别:
    Continuing Grant
{{ showInfoDetail.title }}

作者:{{ showInfoDetail.author }}

知道了