The Application of Phase-field Models to Microstructure Evolution in Multi-phase and Multi-component Alloys

主講人 : Prof. Nele Moelans

Phase-field models hold great promise as a powerful tool for computer-aided design and optimization of multi-component alloys. They can simulate the evolution of complex, multi-phase microstructures during processes such as phase transformations, deformation and annealing. They account for various phenomena, including bulk and grain boundary diffusion, transformation strains, and anisotropy in bulk and interface properties. However, a detailed de ion of the model parameters as a function of composition is required to obtain quantitative results, but often difficult to obtain and computationally expensive to handle in the simulations.

This presentation will discuss the latest advancements in phase-field modeling for multi-component and multi-phase alloys allong with the remaining challenges. It will illustrate the advantages of integrating phase-field models with machine learning and other data driven approaches, and demonstrate the importance of accounting for composition dependence in the simulations.

主講人簡(jiǎn)介：

Nele Moelans是比利時(shí)魯汶大學(xué)（KU Leuven）材料工程系教授，結(jié)構(gòu)復(fù)合材料與合金，完整性與無損檢測(cè)研究部門負(fù)責(zé)人。她于2006年獲得魯汶大學(xué)博士學(xué)位，2006至2010年間作為Research Foundation Flanders (FWO)研究基金會(huì)博士后研究員開展研究工作，期間于2008至2009年赴美國(guó)Lawrence Livermore National實(shí)驗(yàn)室擔(dān)任訪問學(xué)者。2010年，她正式受聘為魯汶大學(xué)教授。

Nele Moelans教授的研究聚焦于相場(chǎng)模型的開發(fā)及其在材料微觀結(jié)構(gòu)演化模擬中的應(yīng)用。她曾榮獲European Commission的ERC資助。其研究方向是將相場(chǎng)模型與CALPHAD吉布斯自由能理論相結(jié)合、開發(fā)擴(kuò)散模型、研究各向異性及微機(jī)械模型。當(dāng)前研究重點(diǎn)涵蓋多個(gè)前沿領(lǐng)域：鋰離子電池枝晶生長(zhǎng)、金屬增材制造中的微觀結(jié)構(gòu)形成、鋼材氫脆現(xiàn)象、釹鐵硼永磁材料液相燒結(jié)、鉑族金屬納米顆粒回收技術(shù)，以及鈦合金馬氏體相變等。Nele Moelans教授已在國(guó)際權(quán)威期刊發(fā)表140余篇論文，并受邀在重要學(xué)術(shù)會(huì)議上作主題報(bào)告50余場(chǎng)。