Effects of lamellar orientation on the fracture toughness of TiAl PST crystals

Yongzhe Wang; Hong Yuan; Hongsheng Ding; Ruirun Chen; Jingjie Guo; Hengzhi Fu; Wei Li

doi:10.1016/j.msea.2019.02.087

Effects of lamellar orientation on the fracture toughness of TiAl PST crystals

Yongzhe Wang^*
, Hong Yuan
, Hongsheng Ding
, Ruirun Chen
, Jingjie Guo
, Hengzhi Fu
, Wei Li

^*Corresponding author for this work

Jinan University
Harbin Institute of Technology

Research output: Contribution to journal › Article › peer-review

49 Scopus citations

Abstract

In this study, we focused on the effect of lamellar orientation on the fracture behaviors of Ti-48Al-2Cr-2Nb (at.%) polysynthetically twinned crystals. The results show that the oriented angle that is between the initial crack plane and lamellar plane performs a crucial role in the fracture resistance of the studied crystal. The fracture toughness increases with the increased oriented angle, and the fracture behavior changes from interlamellar to translamellar; the toughening mechanism also changes correspondingly. Furthermore, schematic models are used to illustrate the relevant toughness mechanism in this article.

Original language	English
Pages (from-to)	199-205
Number of pages	7
Journal	Materials Science and Engineering: A
Volume	752
DOIs	https://doi.org/10.1016/j.msea.2019.02.087
State	Published - 3 Apr 2019
Externally published	Yes

Keywords

Bending test
Fracture behavior
Fully lamellar structure
Titanium aluminides

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10.1016/j.msea.2019.02.087

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title = "Effects of lamellar orientation on the fracture toughness of TiAl PST crystals",

abstract = "In this study, we focused on the effect of lamellar orientation on the fracture behaviors of Ti-48Al-2Cr-2Nb (at.\%) polysynthetically twinned crystals. The results show that the oriented angle that is between the initial crack plane and lamellar plane performs a crucial role in the fracture resistance of the studied crystal. The fracture toughness increases with the increased oriented angle, and the fracture behavior changes from interlamellar to translamellar; the toughening mechanism also changes correspondingly. Furthermore, schematic models are used to illustrate the relevant toughness mechanism in this article.",

keywords = "Bending test, Fracture behavior, Fully lamellar structure, Titanium aluminides",

author = "Yongzhe Wang and Hong Yuan and Hongsheng Ding and Ruirun Chen and Jingjie Guo and Hengzhi Fu and Wei Li",

note = "Publisher Copyright: {\textcopyright} 2019 Elsevier B.V.",

year = "2019",

month = apr,

day = "3",

doi = "10.1016/j.msea.2019.02.087",

language = "英语",

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TY - JOUR

T1 - Effects of lamellar orientation on the fracture toughness of TiAl PST crystals

AU - Wang, Yongzhe

AU - Yuan, Hong

AU - Ding, Hongsheng

AU - Chen, Ruirun

AU - Guo, Jingjie

AU - Fu, Hengzhi

AU - Li, Wei

PY - 2019/4/3

Y1 - 2019/4/3

N2 - In this study, we focused on the effect of lamellar orientation on the fracture behaviors of Ti-48Al-2Cr-2Nb (at.%) polysynthetically twinned crystals. The results show that the oriented angle that is between the initial crack plane and lamellar plane performs a crucial role in the fracture resistance of the studied crystal. The fracture toughness increases with the increased oriented angle, and the fracture behavior changes from interlamellar to translamellar; the toughening mechanism also changes correspondingly. Furthermore, schematic models are used to illustrate the relevant toughness mechanism in this article.

AB - In this study, we focused on the effect of lamellar orientation on the fracture behaviors of Ti-48Al-2Cr-2Nb (at.%) polysynthetically twinned crystals. The results show that the oriented angle that is between the initial crack plane and lamellar plane performs a crucial role in the fracture resistance of the studied crystal. The fracture toughness increases with the increased oriented angle, and the fracture behavior changes from interlamellar to translamellar; the toughening mechanism also changes correspondingly. Furthermore, schematic models are used to illustrate the relevant toughness mechanism in this article.

KW - Bending test

KW - Fracture behavior

KW - Fully lamellar structure

KW - Titanium aluminides

UR - https://www.scopus.com/pages/publications/85062626250

U2 - 10.1016/j.msea.2019.02.087

DO - 10.1016/j.msea.2019.02.087

M3 - 文章

AN - SCOPUS:85062626250

SN - 0921-5093

VL - 752

SP - 199

EP - 205

JO - Materials Science and Engineering: A

JF - Materials Science and Engineering: A

ER -

Effects of lamellar orientation on the fracture toughness of TiAl PST crystals

Abstract

Keywords

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