Continuous Casting of TiAlNb Alloys with Different Velocities by Mixing Binary TiAl Ingot and Nb Wire1 . Issue 7 (10th April 2017)

• Record Type: Journal Article
• Authors: Fang, Hong‐Ze; Chen, Rui‐Run; Chai, Dong; Yang, Yao‐Hua; Su, Yan‐Qing; Ding, Hong‐Sheng; Guo, Jing‐Jie; Fu, Heng‐Zhi
• Is Part Of: Advanced engineering materials. Volume 19:Issue 7(2017)
• Page Start: n/a
• Page End: n/a
• Publication Date: 2017-04-10
• Subjects: Materials -- Periodicals; 620.11
• DOI: 10.1002/adem.201700058
• Languages: English
• ISSNs: 1438-1656

Abstract

Abstract : A method of continuous casting is used and the research investigates microstructure and mechanical properties under different drawing velocity ( R, mm/min). The results show that microstructure and composition measurement of different zones are uniform. The smallest grain size is 25.93 μm and formability is good with 0.5 R . Compressive strength is higher with 0.5R and maximum value is 1697MPa. Fracture toughness with 0.5 R improves about 35.7% which is 21.7MPa·m1/2. The fracture morphology is trans‐lamellar fracture and interface de‐lamination. The method is a feasible way to continuously cast the TiAl‐Nb alloys. The R is an important parameter to add high‐melting‐point element, which affects solidified temperature interval of solidification front and electromagnetic stirring. Abstract : A method is used to add high‐melting‐point element into TiAl‐based alloy . Microstructure and composition measurement are uniform of liquid phase zone, mushy zone and stability zone with 0.5 R . Another image is compressive strength and fracture toughness with different drawing velocity.