Effect of Heat Treatment on Microstructure and Mechanical Properties of a New Type of Ti-3Zr-2Sn-3Mo-25Nb Medical Titanium Alloy AITranslate
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The effect of different heat treatment systems on microstructure and mechanical properties of a new type of Ti-3 Zr-2 Sn-3 Mo-25 Nb medical titanium alloy was analyzed.The results show that the alloy is composed of primaryαphase andβphase after solution treatment in（α＋β）two-phase field.Primaryαphase has short and fine size,precipitated inside the grains and around the grain boundary in granular form.As the rise of the solution treatment temperature,the volume fraction of primaryαphases is decreasing and the volume fraction ofβphases is increasing.The alloy is composed of singleβphase after solution treatment inβfield.As the rise of the solution treatment temperature,the size ofβphase grains is increasing and it is about 25μm.Acicularαphase with fine size and cross arrangement is precipitated in theβphase matrix after solution treatment in（α＋β）two-phase field plus aging treatment.Fine acicularαphase with different sizes is precipitated around grain boundary and inside the grains after solution treatment inβfield plus aging treatment.Theαphase precipitated around grain boundary has a definite orientation.Theαphase precipitated inside the grains is crisscrossed and its size is nonuniform.The alloy obtains a medium strength and better ductility after solution treatment.As the rise of solution treatment temperature,tensile strength and yield strength of the alloy are decreasing,while the ductility and elasticity modulus are increasing.The difference value between tensile strength and yield strength（Rm-Rp0.2）is greater after solution treatment in（α＋β）field than that after solution treatment inβfield.Strength increment of the alloy is higher after solution treatment in（α＋β）field plus aging treatment than that after solution treatment inβfield plus aging treatment.Under the same aging conditions and as the rise of solution treatment temperature,the strength and modulus of the alloy are decreasing,and the elongation rate remains unchanged.The elastic modulus of the alloy reaches the minimum value（E=64 GPa）after solution treatment（780 ℃,30 min,AC）and aging treatment（480 ℃,6 h,AC）,and this value is closest to the elastic modulus of human natural bone and other hard tissues.
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Basic Information:
DOI：
Chinese Library Classification Number:TG146.23[金属学及工艺—金属材料]
Citation Information:
The effect of different heat treatment systems on microstructure and mechanical properties of a new type of Ti-3 Zr-2 Sn-3 Mo-25 Nb medical titanium alloy was analyzed.The results show that the alloy is composed of primaryαphase andβphase after solution treatment in（α＋β）two-phase field.Primaryαphase has short and fine size,precipitated inside the grains and around the grain boundary in granular form.As the rise of the solution treatment temperature,the volume fraction of primaryαphases is decreasing and the volume fraction ofβphases is increasing.The alloy is composed of singleβphase after solution treatment inβfield.As the rise of the solution treatment temperature,the size ofβphase grains is increasing and it is about 25μm.Acicularαphase with fine size and cross arrangement is precipitated in theβphase matrix after solution treatment in（α＋β）two-phase field plus aging treatment.Fine acicularαphase with different sizes is precipitated around grain boundary and inside the grains after solution treatment inβfield plus aging treatment.Theαphase precipitated around grain boundary has a definite orientation.Theαphase precipitated inside the grains is crisscrossed and its size is nonuniform.The alloy obtains a medium strength and better ductility after solution treatment.As the rise of solution treatment temperature,tensile strength and yield strength of the alloy are decreasing,while the ductility and elasticity modulus are increasing.The difference value between tensile strength and yield strength（Rm-Rp0.2）is greater after solution treatment in（α＋β）field than that after solution treatment inβfield.Strength increment of the alloy is higher after solution treatment in（α＋β）field plus aging treatment than that after solution treatment inβfield plus aging treatment.Under the same aging conditions and as the rise of solution treatment temperature,the strength and modulus of the alloy are decreasing,and the elongation rate remains unchanged.The elastic modulus of the alloy reaches the minimum value（E=64 GPa）after solution treatment（780 ℃,30 min,AC）and aging treatment（480 ℃,6 h,AC）,and this value is closest to the elastic modulus of human natural bone and other hard tissues.
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| GB/T 7714-2015 | [1] CHENG Jun, YU Zhen-tao, NIU Jin-long, et al. Effect of Heat Treatment on Microstructure and Mechanical Properties of a New Type of Ti-3Zr-2Sn-3Mo-25Nb Medical Titanium Alloy[J]. Rare Metals and Cemented Carbides, 2018(1): 49-55. |
| MLA | [1] CHENG Jun, et al., "Effect of Heat Treatment on Microstructure and Mechanical Properties of a New Type of Ti-3Zr-2Sn-3Mo-25Nb Medical Titanium Alloy." Rare Metals and Cemented Carbides, no. 1, 2018, pp. 49-55. |
| APA | [1] CHENG Jun, YU Zhen-tao, NIU Jin-long, YU Sen, WANG Lan, & LI Si-ying. (2018). Effect of Heat Treatment on Microstructure and Mechanical Properties of a New Type of Ti-3Zr-2Sn-3Mo-25Nb Medical Titanium Alloy. Rare Metals and Cemented Carbides(1), 49-55. |
| IEEE | [1] CHENG Jun, YU Zhen-tao, NIU Jin-long, YU Sen, WANG Lan, and LI Si-ying, "Effect of Heat Treatment on Microstructure and Mechanical Properties of a New Type of Ti-3Zr-2Sn-3Mo-25Nb Medical Titanium Alloy," Rare Metals and Cemented Carbides, no. 1, pp. 49-55, 2018. keywords: {medical material;near β type titanium alloy;Ti-3Zr-2Sn-3Mo-25Nb;heat treatment;microstruc-ture;mechanical property} |