Microstructure control techniques in primary hot working of titanium alloy bars:A review |
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Institution: | State Key Laboratory of Solidification Processing, School of Materials Science and Engineering, Northwestern Polytechnical University, Xi’an 710072, China |
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Abstract: | How to control the microstructure of titanium alloy bars is important to fabricating high-performance aerial forgings. This paper gives a thorough survey of the manufacturing meth-ods and microstructure control techniques for titanium alloy bars. It summarizes the effects of pro-cessing parameters on the mechanisms and laws of microstructure evolution during b working and (a+b) working, including the kinetics and grains size of dynamic recrystallization (DRX) during b deformation and the kinetics and grains size of spheroidization during (a+b) deformation. The trends in microstructure control techniques are presented for fabricating titanium alloy bars with high efficiency, low cost, and high quality by means of b/(a+b) working, and the puzzles and chal-lenges in the future are also pointed out. |
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Keywords: | Hot working Mechanisms Microstructure Simulation Titanium alloy |
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