Microstructure Evolution and Pre-transformation Microstructure Reconstruction in Ti-6Al-4V Alloy

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Pre-transformation Microstructure Reconstruction in Ti-6Al-4V Alloy</title> <meta name="description" content="Microstructure Evolution and Pre-transformation Microstructure Reconstruction in Ti-6Al-4V Alloy"> <meta name="keywords" content="Ti-6Al-4V alloy, microstructure, electron backscattered diffraction, parent phase reconstruction"> <meta name="viewport" content="width=device-width, initial-scale=1, minimum-scale=1, maximum-scale=1, user-scalable=no"> <meta charset="utf-8"> <link href="https://cdn.waset.org/favicon.ico" type="image/x-icon" rel="shortcut icon"> <link href="https://cdn.waset.org/static/plugins/bootstrap-4.2.1/css/bootstrap.min.css" rel="stylesheet"> <link href="https://cdn.waset.org/static/plugins/fontawesome/css/all.min.css" rel="stylesheet"> <link href="https://cdn.waset.org/static/css/site.css?v=150220211555" rel="stylesheet"> </head> <body> <header> <div class="container"> <nav class="navbar navbar-expand-lg navbar-light"> <a class="navbar-brand" 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</div> <div class="card publication-listing mt-3 mb-3"> <h5 class="card-header" style="font-size:.9rem">Microstructure Evolution and Pre-transformation Microstructure Reconstruction in Ti-6Al-4V Alloy</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Shreyash%20Hadke">Shreyash Hadke</a>, <a href="https://publications.waset.org/abstracts/search?q=Manendra%20Singh%20Parihar"> Manendra Singh Parihar</a>, <a href="https://publications.waset.org/abstracts/search?q=Rajesh%20Khatirkar"> Rajesh Khatirkar</a> </p> <p class="card-text"><strong>Abstract:</strong></p> In the present investigation, the variation in the microstructure with the changes in the heat treatment conditions i.e. temperature and time was observed. Ti-6Al-4V alloy was subject to solution annealing treatments in β (1066C) and α+β phase (930C and 850C) followed by quenching, air cooling and furnace cooling to room temperature respectively. The effect of solution annealing and cooling on the microstructure was studied by using optical microscopy (OM), scanning electron microscopy (SEM), electron backscattered diffraction (EBSD) and x-ray diffraction (XRD). The chemical composition of the β phase for different conditions was determined with the help of energy dispersive spectrometer (EDS) attached to SEM. Furnace cooling resulted in the development of coarser structure (α+β), while air cooling resulted in much finer structure with widmanstatten morphology of α at the grain boundaries. Quenching from solution annealing temperature formed α’ martensite, their proportion being dependent on the temperature in β phase field. It is well known that the transformation of β to α follows Burger orientation relationship (OR). In order to reconstruct the microstructure of parent β phase, a MATLAB code was written using neighbor-to-neighbor, triplet method and Tari’s method. The code was tested on the annealed samples (1066C solution annealing temperature followed by furnace cooling to room temperature). The parent phase data thus generated was then plotted using the TSL-OIM software. The reconstruction results of the above methods were compared and analyzed. The Tari’s approach (clustering approach) gave better results compared to neighbor-to-neighbor and triplet method but the time taken by the triplet method was least compared to the other two methods. <iframe src="https://publications.waset.org/abstracts/24632.pdf" style="width:100%; height:400px;" frameborder="0"></iframe> <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=Ti-6Al-4V%20alloy" title="Ti-6Al-4V alloy">Ti-6Al-4V alloy</a>, <a href="https://publications.waset.org/abstracts/search?q=microstructure" title=" microstructure"> microstructure</a>, <a href="https://publications.waset.org/abstracts/search?q=electron%20backscattered%20diffraction" title=" electron backscattered diffraction"> electron backscattered diffraction</a>, <a href="https://publications.waset.org/abstracts/search?q=parent%20phase%20reconstruction" title=" parent phase reconstruction"> parent phase reconstruction</a> </p> <a 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Microstructure Evolution and Pre-transformation Microstructure Reconstruction in Ti-6Al-4V Alloy