原位内生树枝晶增韧钛基非晶复合材料的组织与性能

吕敬旺; 韦超; 马小昭; 张山; 施志林; 张浩然; 马明臻

doi:10.15980/j.tzzz.2022.04.004

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原位内生树枝晶增韧钛基非晶复合材料的组织与性能
Microstructure and Properties of Ti-based BMGC Reinforced by In-situ Endogenetic Dendrite
2022年42卷第4期页码：414-418
纸质出版日期： 2022 ，
DOI： 10.15980/j.tzzz.2022.04.004

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吕敬旺, 韦超, 马小昭, 等. 原位内生树枝晶增韧钛基非晶复合材料的组织与性能[J]. 特种铸造及有色合金, 2022,42(4):414-418.

Lü Jingwang, Wei Chao, Ma Xiaozhao, et al. Microstructure and Properties of Ti-based BMGC Reinforced by In-situ Endogenetic Dendrite[J]. Special Casting & Nonferrous Alloys, 2022,42(4):414-418.
吕敬旺, 韦超, 马小昭, 等. 原位内生树枝晶增韧钛基非晶复合材料的组织与性能[J]. 特种铸造及有色合金, 2022,42(4):414-418. DOI： 10.15980/j.tzzz.2022.04.004.

Lü Jingwang, Wei Chao, Ma Xiaozhao, et al. Microstructure and Properties of Ti-based BMGC Reinforced by In-situ Endogenetic Dendrite[J]. Special Casting & Nonferrous Alloys, 2022,42(4):414-418. DOI： 10.15980/j.tzzz.2022.04.004.

摘要

以(Ti

40.4

27.7

15.6

6.3

)

（90+x）/90

10-x

（x=0、2、4、6、8、10

%）合金体系为研究对象，制备了4种成分的原位内生β相树枝晶增强钛基非晶复合材料。用XRD、SEM和TEM等手段分析了钛基非晶复合材料的相组成、微观结构以及力学性能和变形行为。结果表明，钛基非晶合金复合材料中的原位内生β相树枝晶的体积分数与尺寸均随Nb含量的增加而增大。拉伸测试结果表明，其屈服强度和抗拉强度随着原位内生β相树枝晶尺寸的增大而降低，但塑性变形能力显著提高。其中，Ti

40.4

27.7

15.6

6.3

非晶复合材料的屈服强度为1 307 MPa

抗拉强度为1 428 MPa

断裂应变为9.61%

表明了钛基非晶复合材料的良好塑性变形能力。

Abstract

Taking(Ti

40.4

27.7

15.6

)

（90+x）/90

10-x

（x=0

%） alloy as the research object

four kinds of Ti-based bulk metallic glass composites（BMGCs） reinforced by in-situ endogenetic β-phase dendrites were prepared. The phase composition

microstructure

mechanical properties and deformation behavior of Ti-based BMGCs were systematically analyzed through XRD

SEM and TEM. The results demonstrate that the volume fraction and dimension of the in-situ endogenetic β-phase dendrites in Ti-based BMGCs are increased with the increase of Nb content. The tensile results reveal that the yield strength and tensile strength of the composites are decreased with increasing dimension of the in-situ endogenetic β-phase dendrites

contrarily

the plastic deformation ability is enhanced significantly. Among these BMGCs

the mean yield strength

tensile strength and fracture strain of Ti

40.4

27.7

15.6

6.3

BMGC are 1 307 MPa

1 428 MPa and 9.61%

respectively

indicating the excellent plastic deformation ability of the Ti-based BMGC.