Research of Superplasticity Deformation Behavior about Coarse-Grain Ti-22Al-25Nb Alloy

Yu Zhi Li; Ze Kun Yao; Wei Zhou; Chun Qin; Hong Zhen Guo; Xiao Bo Liang

doi:10.4028/www.scientific.net/AMR.818.9

Paper Titles

Preface and Organizing Committee

The Influence of Sulfurization Time and H2S Concentration on the Properties of Cu2ZnSnS4 Thin Films
p.3

Research of Superplasticity Deformation Behavior about Coarse-Grain Ti-22Al-25Nb Alloy
p.9

Friction Stir Processing: An Operational Method to Improve Ductility in Pure Copper
p.14

Microstructure Analysis for Emulsified Asphalt Cement Concrete
p.20

Use of Cement Hydration Stabilizer Admixture at Ready Mix Concrete to Avoid Material Waste
p.24

Experimental and Numerical Study of Ballistic Impact Performance on UHMWPE Composites
p.30

Spectroscopic Characterization Technical High Resolution of Gold from a Memory Card RAM
p.37

Preparation of Castor Oil-Based Waterborne Polyurethane and its Application in Electrostatic Copy Paper Surface Enhancing
p.42

HomeAdvanced Materials ResearchAdvanced Materials Research Vol. 818Research of Superplasticity Deformation Behavior...

Research of Superplasticity Deformation Behavior about Coarse-Grain Ti-22Al-25Nb Alloy

Abstract:

This study investigates the superplastic deformation mechanism of coarse-grain materials .Superplasticity deformation behavior of Ti-22Al-25Nb alloy with 200~410μm coarse grain has been investigated through tensile test at 940~990°C and 3.3× (10^-2~10^-4) s^-1 strain rate. Results prove coarse-grain Ti-22Al-25Nb alloy primary depends on slipping of crystal planes between two phases to achieve superplasticity. Transformation from lath O phase to ring equiaxed O phase occurs as temperature rises and its volume percent falls, but percentage of recrystallized B₂ phase increases. Dislocation can move round ring equiaxed O phase. Good plasticity can be preserved because O phase can flow as solid particle in semisolid slurry in B2 grain.

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Periodical:

Advanced Materials Research (Volume 818)

Pages:

9-13

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.818.9

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Online since:

September 2013

Authors:

Yu Zhi Li, Ze Kun Yao, Wei Zhou, Chun Qin, Hong Zhen Guo, Xiao Bo Liang

Keywords:

Coarse Grain, Deformation Behavior, Superplasticity, Ti₂AlNb Alloy

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