The Microstructure Evolution, Mechanical Properties and Densification Mechanism of TiAl-Based Alloys Prepared by Spark Plasma Sintering

作者：Wang, Dongjun^*; Yuan, Hao; Qiang, Jianming

来源：Metals, 2017, 7(6): 201.

DOI：10.3390/met7060201

• intermetallics
• aerospace
• powder metallurgy
• microstructure evolution
• mechanical property
• densification

The microstructure evolution and mechanical properties of a Ti-Al-Cr-Nb alloy prepared by spark plasma sintering (SPS) at different temperatures and stresses were investigated in detail. Sintering temperature plays a key role in the densification process and phase transformation, which determines the microstructure. The mechanical properties of the sintered alloys depend on the microstructure caused by the sintering. Furthermore, the densification process and mechanism of TiAl-based metallic powders during SPS were studied based on experimental results and theoretical analysis, the results of which will help fabricate these kinds of intermetallic alloys using a powder metallurgy technique and accelerate their industrial applications.

• 出版日期2017-6
• 单位哈尔滨工业大学