کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
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1498091 | 1510889 | 2016 | 4 صفحه PDF | دانلود رایگان |
An in situ method to study the behavior of alloys during rapid heating and cooling combining laser heating with synchrotron micro X-ray diffraction and high-speed imaging is presented. Near-spherical Ti–48Al specimens were melted using a laser-based heating system consisting of two diode lasers and subsequently rapidly solidified using a Cu support structure. The Al-rich Ti–48Al forms a fine grained dual phase α2 + γ microstructure. Upon solidification, the formation of the β-phase is fully suppressed. Time-resolved peak evolution and temperature-corrected micro X-ray diffraction data provides clear observations of solidification and solid state phase transformations under non-equilibrium conditions similar to beam-based additive manufacturing.
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Journal: Scripta Materialia - Volume 114, 15 March 2016, Pages 117–120