Defocusing Effects of Laser Beam on the Weldability of Powder Metallurgy Ti-Based Shape Memory Alloys

Abdollah Bahador; Esah Hamzah; Katsuyoshi Kondoh; T. Abubakar; Farazila Yusof; Safaa N. Saud; Mustafa K. Ibrahim; M. A. Ezazi

doi:10.1016/j.proeng.2017.04.087

Defocusing Effects of Laser Beam on the Weldability of Powder Metallurgy Ti-Based Shape Memory Alloys

Abdollah Bahador, Esah Hamzah, Katsuyoshi Kondoh, T. Abubakar, Farazila Yusof, Safaa N. Saud, Mustafa K. Ibrahim, M. A. Ezazi

Mechanical Engineering

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

8 Scopus citations

2 Downloads (Pure)

Abstract

 The influence of defocusing distance of the fiber laser welding on Ti-51at%Ni, Ti-28%atNb and Ti-30at%Ta
 shape memory alloys (SMAs) was investigated. These alloys were produced by powder metallurgy (P/M) and
 sintered by furnace and microwave processes. The experimental results showed that the furnace-sintered Ti-Ni
 welds have the maximum porosity density and the lowest weld quality. While, the microwave sintered alloys of
 Ti-Nb and Ti-Ta SMAs presented better weldability, even though porosities were still observed. Ti-Ta SMA
 showed the best welding quality compared with the other welded joints. It can be concluded that porosities play
 important role in the welding of powder metallurgy alloys and in order to achieve high-quality welds, the
 porosities should be minimized.

Original language	American English
Journal	Procedia Engineering
Volume	184
DOIs	https://doi.org/10.1016/j.proeng.2017.04.087
State	Published - May 2 2017

Disciplines

Mechanical Engineering
Engineering

Keywords

Fiber laser welding
Shape memory alloys
furnace sintering
microwave sintering
powder metallurgy

Access to Document

10.1016/j.proeng.2017.04.087License: Unspecified

1-s2.0-S1877705817315928-main.pdfFinal published version, 13.8 MBLicense: Unspecified

Cite this

@article{0f9af8c6f14d42d0851a75a9a5af3b74,

title = "Defocusing Effects of Laser Beam on the Weldability of Powder Metallurgy Ti-Based Shape Memory Alloys",

abstract = " The influence of defocusing distance of the fiber laser welding on Ti-51at%Ni, Ti-28%atNb and Ti-30at%Ta shape memory alloys (SMAs) was investigated. These alloys were produced by powder metallurgy (P/M) and sintered by furnace and microwave processes. The experimental results showed that the furnace-sintered Ti-Ni welds have the maximum porosity density and the lowest weld quality. While, the microwave sintered alloys of Ti-Nb and Ti-Ta SMAs presented better weldability, even though porosities were still observed. Ti-Ta SMA showed the best welding quality compared with the other welded joints. It can be concluded that porosities play important role in the welding of powder metallurgy alloys and in order to achieve high-quality welds, the porosities should be minimized.",

keywords = "Fiber laser welding, Shape memory alloys, furnace sintering, microwave sintering, powder metallurgy",

author = "Abdollah Bahador and Esah Hamzah and Katsuyoshi Kondoh and T. Abubakar and Farazila Yusof and Saud, {Safaa N.} and Ibrahim, {Mustafa K.} and Ezazi, {M. A.}",

note = "Publisher Copyright: {\textcopyright} 2017 Published by Elsevier Ltd.",

year = "2017",

month = may,

day = "2",

doi = "10.1016/j.proeng.2017.04.087",

language = "American English",

volume = "184",

journal = "Procedia Engineering",

issn = "1877-7058",

publisher = "Elsevier B.V.",

}

TY - JOUR

T1 - Defocusing Effects of Laser Beam on the Weldability of Powder Metallurgy Ti-Based Shape Memory Alloys

AU - Bahador, Abdollah

AU - Hamzah, Esah

AU - Kondoh, Katsuyoshi

AU - Abubakar, T.

AU - Yusof, Farazila

AU - Saud, Safaa N.

AU - Ibrahim, Mustafa K.

AU - Ezazi, M. A.

PY - 2017/5/2

Y1 - 2017/5/2

N2 - The influence of defocusing distance of the fiber laser welding on Ti-51at%Ni, Ti-28%atNb and Ti-30at%Ta shape memory alloys (SMAs) was investigated. These alloys were produced by powder metallurgy (P/M) and sintered by furnace and microwave processes. The experimental results showed that the furnace-sintered Ti-Ni welds have the maximum porosity density and the lowest weld quality. While, the microwave sintered alloys of Ti-Nb and Ti-Ta SMAs presented better weldability, even though porosities were still observed. Ti-Ta SMA showed the best welding quality compared with the other welded joints. It can be concluded that porosities play important role in the welding of powder metallurgy alloys and in order to achieve high-quality welds, the porosities should be minimized.

AB - The influence of defocusing distance of the fiber laser welding on Ti-51at%Ni, Ti-28%atNb and Ti-30at%Ta shape memory alloys (SMAs) was investigated. These alloys were produced by powder metallurgy (P/M) and sintered by furnace and microwave processes. The experimental results showed that the furnace-sintered Ti-Ni welds have the maximum porosity density and the lowest weld quality. While, the microwave sintered alloys of Ti-Nb and Ti-Ta SMAs presented better weldability, even though porosities were still observed. Ti-Ta SMA showed the best welding quality compared with the other welded joints. It can be concluded that porosities play important role in the welding of powder metallurgy alloys and in order to achieve high-quality welds, the porosities should be minimized.

KW - Fiber laser welding

KW - Shape memory alloys

KW - furnace sintering

KW - microwave sintering

KW - powder metallurgy

U2 - 10.1016/j.proeng.2017.04.087

DO - 10.1016/j.proeng.2017.04.087

M3 - Article

SN - 1877-7058

VL - 184

JO - Procedia Engineering

JF - Procedia Engineering

ER -

Defocusing Effects of Laser Beam on the Weldability of Powder Metallurgy Ti-Based Shape Memory Alloys

Abstract

Disciplines

Keywords

Access to Document

Fingerprint

Cite this