Microstructural control in a Ti-based alloy by changing laser processing mode and power during direct laser deposition

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Microstructural control in a Ti-based alloy by changing laser processing mode and power during direct laser deposition. / Ravi, G. A.; Qiu, Chunlei; Attallah, Moataz M.

In: Materials Letters, Vol. 179, 15.09.2016, p. 104-108.

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@article{db664e648ad84aa4a81bd023c37fb4cc,
title = "Microstructural control in a Ti-based alloy by changing laser processing mode and power during direct laser deposition",
abstract = "Ti-6Al-4V samples have been fabricated by direct laser deposition using different laser powers and two different laser processing modes, continuous wave (CW) mode and CW+PW (pulsed wave) mode. The as-fabricated microstructure was investigated using photography, optical microscopy and secondary electron microscopy. It was found that both laser mode and laser power show significant influence on grain structure. The CW mode generally leads to well-developed large columnar grains whereas the CW+PW mode tends to give rise to much finer equiaxed grains. Higher laser power was found to result in larger grains and coarser microstructure.",
keywords = "Direct Laser Deposition, Laser Mode, Microstructure, Ti-6Al-4V",
author = "Ravi, {G. A.} and Chunlei Qiu and Attallah, {Moataz M.}",
year = "2016",
month = sep,
day = "15",
doi = "10.1016/j.matlet.2016.05.038",
language = "English",
volume = "179",
pages = "104--108",
journal = "Materials Letters",
issn = "0167-577X",
publisher = "Elsevier",

}

RIS

TY - JOUR

T1 - Microstructural control in a Ti-based alloy by changing laser processing mode and power during direct laser deposition

AU - Ravi, G. A.

AU - Qiu, Chunlei

AU - Attallah, Moataz M.

PY - 2016/9/15

Y1 - 2016/9/15

N2 - Ti-6Al-4V samples have been fabricated by direct laser deposition using different laser powers and two different laser processing modes, continuous wave (CW) mode and CW+PW (pulsed wave) mode. The as-fabricated microstructure was investigated using photography, optical microscopy and secondary electron microscopy. It was found that both laser mode and laser power show significant influence on grain structure. The CW mode generally leads to well-developed large columnar grains whereas the CW+PW mode tends to give rise to much finer equiaxed grains. Higher laser power was found to result in larger grains and coarser microstructure.

AB - Ti-6Al-4V samples have been fabricated by direct laser deposition using different laser powers and two different laser processing modes, continuous wave (CW) mode and CW+PW (pulsed wave) mode. The as-fabricated microstructure was investigated using photography, optical microscopy and secondary electron microscopy. It was found that both laser mode and laser power show significant influence on grain structure. The CW mode generally leads to well-developed large columnar grains whereas the CW+PW mode tends to give rise to much finer equiaxed grains. Higher laser power was found to result in larger grains and coarser microstructure.

KW - Direct Laser Deposition

KW - Laser Mode

KW - Microstructure

KW - Ti-6Al-4V

UR - http://www.scopus.com/inward/record.url?scp=84969172354&partnerID=8YFLogxK

U2 - 10.1016/j.matlet.2016.05.038

DO - 10.1016/j.matlet.2016.05.038

M3 - Article

AN - SCOPUS:84969172354

VL - 179

SP - 104

EP - 108

JO - Materials Letters

JF - Materials Letters

SN - 0167-577X

ER -