e-journal

High cycle fatigue and fatigue crack propagation behaviors of β-annealed Ti-6Al-4V alloy

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Abstract
Background: The effect of β annealing on high cycle fatigue (HCF) and fatigue crack propagation (FCP) behaviors of
Ti64 alloy were examined, and the results were compared to those of mill-annealed counterpart.
Methods: The tensile tests, stress-controlled HCF tests, and FCP tests were conducted, and the fractographic and
micrographic analyses were performed before and after the tests.
Results: The β-annealed Ti64 specimen showed inferior HCF properties as compared to the mill-annealed counterpart,
as a result of lower yield strength. On the other hand the resistance to FCP of β-annealed Ti64 specimen was higher
than that of mill-annealed counterpart in low and intermediate ΔK regime.
Conclusions: Relatively easy fatigue crack initiation at the colony boundaries of β-annealed Ti64 specimen reduce the
resistance to HCF. The resistance to FCP of β-annealed Ti64 specimen increased significantly particularly in low ΔK
regime along with severe crack branching and deflection.

Keywords: High cycle fatigue, Fatigue crack propagation, Ti-6Al-4 V, Microstructure, Fatigue, β-annealing

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Ketersediaan

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Informasi Detail

Judul Seri

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No. Panggil

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Penerbit

: Springer Singapore., 2017

Deskripsi Fisik

International Journal of Mechanical and Materials Engineering

Bahasa

English

ISBN/ISSN

2198-2791

Klasifikasi

NONE

Tipe Isi

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Tipe Media

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Tipe Pembawa

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Edisi

Volume 12, Issue 1, December 2017

Subjek

TEKNIK MESIN

Info Detail Spesifik

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Pernyataan Tanggungjawab

ety

Versi lain/terkait

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