真空热压制备双相Ta-TaCr<sub>2</sub>合金的组织与性能

孙桂林; 肖璇; 胡孔生; 危诗诗

doi:10.15980/j.tzzz.2022.11.020

研究·合金性能 | 浏览量 : 0 下载量: 10 CSCD: 0

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真空热压制备双相Ta-TaCr₂合金的组织与性能
Microstructure and Properties of Dual Phase Ta-TaCr₂ Alloy Prepared by Vacuum Hot Pressing
2022年42卷第11期页码：1415-1418
纸质出版日期： 2022 ，
DOI： 10.15980/j.tzzz.2022.11.020

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孙桂林, 肖璇, 胡孔生, 等. 真空热压制备双相Ta-TaCr₂合金的组织与性能[J]. 特种铸造及有色合金, 2022,42(11):1415-1418.

Sun Guilin, Xiao Xuan, Hu Kongsheng, et al. Microstructure and Properties of Dual Phase Ta-TaCr₂ Alloy Prepared by Vacuum Hot Pressing[J]. Special Casting & Nonferrous Alloys, 2022,42(11):1415-1418.
孙桂林, 肖璇, 胡孔生, 等. 真空热压制备双相Ta-TaCr₂合金的组织与性能[J]. 特种铸造及有色合金, 2022,42(11):1415-1418. DOI： 10.15980/j.tzzz.2022.11.020.

Sun Guilin, Xiao Xuan, Hu Kongsheng, et al. Microstructure and Properties of Dual Phase Ta-TaCr₂ Alloy Prepared by Vacuum Hot Pressing[J]. Special Casting & Nonferrous Alloys, 2022,42(11):1415-1418. DOI： 10.15980/j.tzzz.2022.11.020.

摘要

通过机械合金化+真空热压烧结工艺制备双相Ta-TaCr

合金，研究了不同Ta含量的双相Ta-TaCr

合金在1 350℃下保压180 min后获得的组织和室温力学性能。结果表明，当Ta含量由50%(摩尔分数)增加至85%时，合金的致密度、断裂韧度、抗压强度以及塑性应变均逐渐增加。当Ta含量增加至85%时试样的抗压强度与塑性应变分别为3 753 MPa、28.57%

充分实现了双相增韧的效果。

Abstract

The dual-phase Ta-TaCr

alloy was prepared by mechanical alloying with vacuum hot pressing sintering. The microstructure and room temperature mechanical properties of dual-phase Ta-TaCr

alloys with different Ta contents were investigated with holding at 1 350 ℃ for 180 min. The results indicate that when the Ta content is increased from 50% to 85%（molar fraction）

the density

fracture toughness

compressive strength and plastic strain of the alloy are gradually increased. When the Ta content is increased to 85%

the compressive strength and plastic strain are 3 753 MPa and 28.57%

respectively

fully achieving the dual-phase toughening effect.