2011•Unpublished venueRequires access
Effects of heat treatment on microstructure and properties of Ti-7Al-4Mo alloy
Qiao Zhi, Kuisheng Liu, Lai Yunjin, Zhang Fengshou, Shaopeng Wang, Ma Fanjiao, Hailong Xu, Wei Jiang, Wenge Ma, Du Jianchao
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Abstract
Microstructure and properties of Ti-7Al-4Mo alloy after conventional annealing,solution and aging treatment were investigated.The results show that tensile and yield strengths fall down and plasticity has no obvious change when annealing temperature increasing from 780 ℃ to 790 ℃ and furnace cooling to room temperature.The strength and plasticity is nearly invariant when annealing temperature increasing from 790 ℃ to 800 ℃ and furnace cooling to room temperature.The strength falls down about 3% and plasticity increases a small amount when annealing temperature increasing from 740 ℃ to 790 ℃ and air cooling.Solution treating and aging results in a significant increases in tensile and yield strength,while decreases in ductility.Strength increases and plasticity decreases notably with solution treating temperature rising.In addition,tensile strength decreases obviously,yield strength decreases a small amount and plasticity increases distinctly with aging temperature rising.