SU Zuwu MENG Guowen GUO Hongzhen LIU Jianchao YAO Zekun Northwestern Polytechnical University
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Xi'an
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ChinaYANG Zhaosu HU Zongshi Baoji Non-Ferrous Metals Mill
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Baoji
,
China
金属学报(英文版)
The formation reason and elimination method of non-uniform microstructure defects in Ti al- loy TC11 bar have been studied.The coagulating and coarsening into block of the part of grain boundary α and secondary α seem to be caused by the ingot cogging and initial forging temperature in the β region as well as no more enough deformation and uneven distribution. The grain α,elongated α and blocky α may be finally eliminated by adopting the technique of (α+β)thermomechanical processing+β processing,W.Q.+recrystallization annealing,A.C., thus the size of uniform and fine equiaxed α structure is believed to be reduced to 1.9258μm.
关键词:
TC11 Ti alloy
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