Fatigue crack nucleation and growth behaviors of laser melting deposited Ti-6Al-2Zr-Mo-V

R. J. He; H. M. Wang

doi:10.1016/j.msea.2009.12.008

Fatigue crack nucleation and growth behaviors of laser melting deposited Ti-6Al-2Zr-Mo-V

R. J. He
, H. M. Wang

Beihang University

科研成果: 期刊稿件 › 文章 › 同行评审

31 引用（Scopus）

摘要

The fatigue crack nucleation and growth behaviors of laser melting deposited (LMD) Ti-6Al-2Zr-Mo-V alloy are studied. A fine α/β lamellar microstructure is obtained. High-cycle fatigue test was conducted at room temperature. Fatigue fracture surfaces are examined by SEM. Fatigue crack initiates by cleavage fracture along crystallographic facets in α and propagates by cleavage facets and tearing of α/β lamellar colonies in fatigue crack initiation region. At applied stress less than 750 MPa, fatigue crack nucleation is characterized by the crystallographic cleavage facets of α lamellae and tearing of β lamellae. Striations are observed parallel or perpendicular to the lamellar orientation. Two types of steps are observed in the crack propagation. The mechanisms of fatigue nucleation and growth in laser deposited Ti-6Al-2Zr-Mo-V alloy are related to the slip behaviors and the interactions between crack and colony boundaries.

源语言	英语
页（从-至）	1933-1937
页数	5
期刊	Materials Science and Engineering: A
卷	527
期	7-8
DOI	https://doi.org/10.1016/j.msea.2009.12.008
出版状态	已出版 - 25 3月 2010
已对外发布	是

访问文件

10.1016/j.msea.2009.12.008

其它文件与链接

链接到 Scopus 的出版物

引用此

@article{251d89c09aa64b07a433a55bcf4a9481,

title = "Fatigue crack nucleation and growth behaviors of laser melting deposited Ti-6Al-2Zr-Mo-V",

abstract = "The fatigue crack nucleation and growth behaviors of laser melting deposited (LMD) Ti-6Al-2Zr-Mo-V alloy are studied. A fine α/β lamellar microstructure is obtained. High-cycle fatigue test was conducted at room temperature. Fatigue fracture surfaces are examined by SEM. Fatigue crack initiates by cleavage fracture along crystallographic facets in α and propagates by cleavage facets and tearing of α/β lamellar colonies in fatigue crack initiation region. At applied stress less than 750 MPa, fatigue crack nucleation is characterized by the crystallographic cleavage facets of α lamellae and tearing of β lamellae. Striations are observed parallel or perpendicular to the lamellar orientation. Two types of steps are observed in the crack propagation. The mechanisms of fatigue nucleation and growth in laser deposited Ti-6Al-2Zr-Mo-V alloy are related to the slip behaviors and the interactions between crack and colony boundaries.",

keywords = "Crack nucleation, Crack propagation, Fatigue, Laser melting deposition, Microstructure, Titanium",

author = "He, \{R. J.\} and Wang, \{H. M.\}",

year = "2010",

month = mar,

day = "25",

doi = "10.1016/j.msea.2009.12.008",

language = "英语",

volume = "527",

pages = "1933--1937",

journal = "Materials Science and Engineering: A",

issn = "0921-5093",

publisher = "Elsevier Ltd",

number = "7-8",

}

TY - JOUR

T1 - Fatigue crack nucleation and growth behaviors of laser melting deposited Ti-6Al-2Zr-Mo-V

AU - He, R. J.

AU - Wang, H. M.

PY - 2010/3/25

Y1 - 2010/3/25

N2 - The fatigue crack nucleation and growth behaviors of laser melting deposited (LMD) Ti-6Al-2Zr-Mo-V alloy are studied. A fine α/β lamellar microstructure is obtained. High-cycle fatigue test was conducted at room temperature. Fatigue fracture surfaces are examined by SEM. Fatigue crack initiates by cleavage fracture along crystallographic facets in α and propagates by cleavage facets and tearing of α/β lamellar colonies in fatigue crack initiation region. At applied stress less than 750 MPa, fatigue crack nucleation is characterized by the crystallographic cleavage facets of α lamellae and tearing of β lamellae. Striations are observed parallel or perpendicular to the lamellar orientation. Two types of steps are observed in the crack propagation. The mechanisms of fatigue nucleation and growth in laser deposited Ti-6Al-2Zr-Mo-V alloy are related to the slip behaviors and the interactions between crack and colony boundaries.

AB - The fatigue crack nucleation and growth behaviors of laser melting deposited (LMD) Ti-6Al-2Zr-Mo-V alloy are studied. A fine α/β lamellar microstructure is obtained. High-cycle fatigue test was conducted at room temperature. Fatigue fracture surfaces are examined by SEM. Fatigue crack initiates by cleavage fracture along crystallographic facets in α and propagates by cleavage facets and tearing of α/β lamellar colonies in fatigue crack initiation region. At applied stress less than 750 MPa, fatigue crack nucleation is characterized by the crystallographic cleavage facets of α lamellae and tearing of β lamellae. Striations are observed parallel or perpendicular to the lamellar orientation. Two types of steps are observed in the crack propagation. The mechanisms of fatigue nucleation and growth in laser deposited Ti-6Al-2Zr-Mo-V alloy are related to the slip behaviors and the interactions between crack and colony boundaries.

KW - Crack nucleation

KW - Crack propagation

KW - Fatigue

KW - Laser melting deposition

KW - Microstructure

KW - Titanium

UR - https://www.scopus.com/pages/publications/75849128529

U2 - 10.1016/j.msea.2009.12.008

DO - 10.1016/j.msea.2009.12.008

M3 - 文章

AN - SCOPUS:75849128529

SN - 0921-5093

VL - 527

SP - 1933

EP - 1937

JO - Materials Science and Engineering: A

JF - Materials Science and Engineering: A

IS - 7-8

ER -

Fatigue crack nucleation and growth behaviors of laser melting deposited Ti-6Al-2Zr-Mo-V

摘要

访问文件

其它文件与链接

学术指纹

引用此