Influence of HIP Process on Mechanical Properties of Ti<sub>2</sub>AlNb Alloy Castings

Huang Dong; Wei Zhanlei; Zhu Langping; Li Yan; Zhao Peng; Luo Qian

doi:10.15980/j.tzzz.2018.08.006

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Influence of HIP Process on Mechanical Properties of Ti₂AlNb Alloy Castings
Vol. 38, Issue 8, Pages: 835-837(2018)
Published： 2018 ，
DOI： 10.15980/j.tzzz.2018.08.006

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[1]黄东,魏战雷,朱郎平,李岩,赵鹏,罗倩.热等静压对Ti_2AlNb合金组织和力学性能的影响[J].特种铸造及有色合金,2018,38(08):835-837.

Huang Dong, Wei Zhanlei, Zhu Langping, et al. Influence of HIP Process on Mechanical Properties of Ti₂AlNb Alloy Castings. [J]. Special Casting & Nonferrous Alloys 38(8):835-837(2018)
[1]黄东,魏战雷,朱郎平,李岩,赵鹏,罗倩.热等静压对Ti_2AlNb合金组织和力学性能的影响[J].特种铸造及有色合金,2018,38(08):835-837. DOI： 10.15980/j.tzzz.2018.08.006.

Huang Dong, Wei Zhanlei, Zhu Langping, et al. Influence of HIP Process on Mechanical Properties of Ti₂AlNb Alloy Castings. [J]. Special Casting & Nonferrous Alloys 38(8):835-837(2018) DOI： 10.15980/j.tzzz.2018.08.006.

摘要

研究了热等静压压力、温度和时间对Ti2AlNb合金铸件组织和力学性能的影响。结果发现

增大热等静压压力对Ti2AlNb合金的抗拉强度影响较小

但可显著改善试样的塑性;在1 040

100℃对Ti2AlNb合金铸件进行热等静压处理3h可以获得B2基体上弥散分布着细小O相的结构

其抗拉强度较高;在1 040℃下进行1.5

h的热等静压处理可显著提高其抗拉强度

但热等静压时间超过4h后会降低其抗拉强度。

Abstract

The influences of the pressure

temperature and duration time of Hot Isostatic Pressing（HIP）on the ultimate tensile strength（UTS）of Ti2 AlNb casting samples were investigated.It is found that the influence of HIP pressure on the UTS of the Ti2 AlNb casting samples can be ignored while the plasticity can be improved greatly with the increase of HIP pressure.The microstructure with fine Ophases dispersed in B2 matrix can be obtained by the HIP treatment of Ti2 AlNb alloy at a temperature from1 040 ℃to 1 100℃for 3 h

and the samples exhibit high tensile strength.The UTS of Ti2 AlNb casting can be improved greatly by HIP at 1 040 ℃for 1.5 to 3 h

while the UTS of the samples is decreased when the duration of HIP is increased to 4 h.