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[交流]
德國波鴻大學全職博士位置、高熵合金方向（稅后2200歐/月，另包保險以及養(yǎng)老金）
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BCC高熵合金方向，會使用三維原子探針和透射電鏡研究析出相和相變等。這個項目是德國高熵合金重點項目其中子項目，學生會經(jīng)常和德國境內(nèi)高熵合金組學生和老師學術(shù)交流。100%德國工作合同項目（德國博士項目很少給100%工作合同，稅后大概2200歐元，另外還有免費德國醫(yī)療保險和養(yǎng)老金）。歡迎有很強高熵合金/bcc鈦合金相變/透射電鏡背景同學申請！ Refractory high-entropy alloys (RHEAs), consisting of elements with high melting points, are promising candidates for high-temperature applications beyond Ni-based superalloys and other conventional refractory alloys. Among RHEAs, the equiatomic body-centered cubic (BCC) TiZrNbHfTa alloy exhibits an excellent combination of ductility and strength at room temperature. This alloy was initially thought to be stable since its high mixing entropy should inhibit the formation of secondary phases. However, upon aging below 900 °C, a hexagonal close-packed (HCP) phase precipitates, leading to a severe deterioration in ductility. To improve the mechanical performance of BCC RHEAs, one must know how to control the formation of microstructural features and understand their roles in deformation behaviors. In this project, the successful PhD candidate will use atom probe tomography and transmission electron microscopy (TEM) to investigate early-stage HCP precipitation and formation of nanoprecipitates (https://www.ruhr-uni-bochum.de/atomic-characterisation). The successful PhD candidate will work with another PhD student under the supervision of Prof. Guillaume Laplanche to establish the structure-property relationships of TiZrNbHfTa RHEAs. This PhD position is a part of priority programme ‘compositionally complex alloys-high entropy alloys (CCA-HEA, SPP 2006). The Ruhr-Universität Bochum is one of the leading research universities. The university draws its strengths from both the diversity and the proximity of scientific and engineering disciplines on a single, coherent campus. This highly dynamic setting enables students and researchers to work across traditional boundaries of academic subjects and faculties. The successful candidate will be working in the new research center for interface-dominated high-performance materials (ZGH) at Ruhr University Bochum, which houses a large and comprehensive suite of equipment dedicated to nanostructure analysis; the center is among the best facilities of its kind in the world. She or he will have access to world-class set of laboratories and more than 10 major microscopy platforms, including the state-of-the-art atom probe, aberration-corrected TEM and focused ion beam etc. The candidate must have: • an excellent master’s degree in materials science • solid knowledge of physical metallurgy, familiar with phase transformation in BCC high entropy alloys or titanium alloys, or deformation in BCC titanium alloys • experience with TEM, or high-resolution TEM, or scanning TEM (STEM), or interpretation of electron diffraction • a high level of spoken and written English • can work both independently and as part of an interdisciplinary team • ability to plan and organize the PhD project effectively • can work in multicultural environment • self-motivated and eager to learn Please send your complete and informative application documents (informative cover letter, CV with certificates) as one pdf document by e-mail to: Prof. Dr. Tong Li, email: atomicjobs-mb@rub.de Application deadline: 13 December 2020 23:59 pm |
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2樓2020-11-17 03:25:13
lichangli123
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3樓2020-11-21 00:01:40
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