(1. 中南大學(xué)粉末冶金國家重點(diǎn)實(shí)驗(yàn)室，長沙 410083；
2. 深圳市萬澤中南研究院有限公司，深圳518017；
3. 中南大學(xué)材料科學(xué)與工程學(xué)院，長沙 410083)
摘 要: 對相圖的常用實(shí)驗(yàn)測定方法進(jìn)行綜述，以Cr-Ni-Ru三元體系相圖的高通量測定為例，展示高效測定二元、三元相圖的擴(kuò)散多元節(jié)方法。基于相圖計(jì)算(Calculation of phase diagrams, CALPHAD)方法，以 Cr-Ru二元體系和Cr-Ni-Ru三元體系的熱力學(xué)優(yōu)化為例，闡述Cr-Ni-Ru三元體系熱力學(xué)數(shù)據(jù)庫建立的具體流程，分析當(dāng)前鎳基高溫合金研究效率低下的原因。結(jié)果表明：快速建立與定量預(yù)測材料成分、相、組織、性能關(guān)系的高通量實(shí)驗(yàn)和計(jì)算方法是促進(jìn)未來鎳基高溫合金研究發(fā)展的重點(diǎn)。
關(guān)鍵字: 鎳基高溫合金；擴(kuò)散多元節(jié)；高通量方法； CALPHAD方法；相圖；熱力學(xué)優(yōu)化
（1. State Key Laboratory of Powder Metallurgy, Central South University, Changsha 410083, China;
2. Shenzhen Wedge Central South Research Institute Co., Ltd., Shenzhen 518017, China;
3. School of Materials Science and Engineering, Central South University, Changsha 410083, China）
Abstract:The experimental methods for phase diagram determination were reviewed. Comparing with the traditional methods for phase diagram determination, the Cr-Ni-Ru ternary system was employed to illustrate the high efficiency and accuracy of the diffusion multiple technique in the binary and ternary phase diagrams determination. Based on the calculation of phase diagrams (CALPHAD) approach, thermodynamic assessments were performed in the Cr-Ru and Cr-Ni-Ru systems to expound the procedure of the establishment of the Cr-Ni-Ru thermodynamic database. The reasons resulting in the inefficiency of the development of nickel-based superalloys were also discussed. The results show that high-throughput experimental and computational methods for efficiently predicting and establishing the relationships among composition, phase, microstructure and property are fundamental importance for promoting the development of nickel-based super alloys.
Key words: nickel-based superalloy; diffusion multiple; high-throughput method; CALPHAD method; phase diagram; thermodynamic assessment
