Scholarlink

<p>A novel systematic study of interdiffusion-driven phase growth in complex concentrated alloys (CCAs) is presented w.r.t increasing configurational entropy. Diffusion couples of M/Sn (M: Ni, CoNi, CoCrNi, CoFeNi, CoCrFeNi and CoCrFeMnNi) are annealed at 225&#xa0;°C for 48&#xa0;h to comprehensively explore diffusion behaviour in CCAs. Except Ni/Sn, all the systems exhibited two-phase layers, one of which is (CoNi)Sn<sub>3</sub>. Cr, Fe and Mn exhibited limited solubility in (CoNi)Sn<sub>3</sub> and formed a separate intermetallic phase in the interdiffusion zone (IDZ). Contrary to the notion of sluggish diffusion, the overall thickness of the IDZ did not follow a monotonic decrease with increasing number of elements. The integrated diffusivities <InlineEquation ID="IEq1"> <InlineMediaObject> <ImageObject Color="BlackWhite" FileRef="12666_2024_3542_Article_IEq1.gif" Format="GIF" Height="43" Rendition="HTML" Resolution="72" Type="Linedraw" Width="42" /> </InlineMediaObject> <EquationSource Format="TEX">\(\left( {\mathop D\limits^{ \vee }_{{{\text{int}}}} } \right)\)</EquationSource> <EquationSource Format="MATHML"><math> <mfenced close=")" open="("> <munderover> <mi>D</mi> <mtext>int</mtext> <mo>∨</mo> </munderover> </mfenced> </math></EquationSource> </InlineEquation> for (CoNi)Sn<sub>3</sub> phase decelerated as the solutes (Cr, Fe and Mn) occupied 3d transition element sublattice. Our results demonstrate non-sluggish diffusion-controlled phenomenon (phase growth) in CCAs and substantiate the interplay of thermodynamic and kinetic factors in evolution of multicomponent intermetallics.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Interdiffusion-Driven Phase Growth in Complex Concentrated FCC Alloys

  • 期刊论文

  • 发表日期：

    2025年1月24日

查看全文
  • Bhawna Yadav,
  • Archita Malgaonkar,
  • M. Vaidya

摘要

A novel systematic study of interdiffusion-driven phase growth in complex concentrated alloys (CCAs) is presented w.r.t increasing configurational entropy. Diffusion couples of M/Sn (M: Ni, CoNi, CoCrNi, CoFeNi, CoCrFeNi and CoCrFeMnNi) are annealed at 225 °C for 48 h to comprehensively explore diffusion behaviour in CCAs. Except Ni/Sn, all the systems exhibited two-phase layers, one of which is (CoNi)Sn3. Cr, Fe and Mn exhibited limited solubility in (CoNi)Sn3 and formed a separate intermetallic phase in the interdiffusion zone (IDZ). Contrary to the notion of sluggish diffusion, the overall thickness of the IDZ did not follow a monotonic decrease with increasing number of elements. The integrated diffusivities \(\left( {\mathop D\limits^{ \vee }_{{{\text{int}}}} } \right)\) D int ∨ for (CoNi)Sn3 phase decelerated as the solutes (Cr, Fe and Mn) occupied 3d transition element sublattice. Our results demonstrate non-sluggish diffusion-controlled phenomenon (phase growth) in CCAs and substantiate the interplay of thermodynamic and kinetic factors in evolution of multicomponent intermetallics.