Defects in Be/Al laser welding

Guojian Hao; Zhi Lin; Junpin Lin; Yanli Wang; Guoliang Chen

Defects in Be/Al laser welding

Guojian Hao^*
, Zhi Lin
, Junpin Lin
, Yanli Wang
, Guoliang Chen

^*Corresponding author for this work

University of Science and Technology Beijing

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

Abstract

An investigation was conducted to determine the causes of weld defects in laser Be/Al weldments. In agreement with earlier studies, features on the fracture surfaces consistent with hot shortness cracking were observed. In this paper, conduction mode welds and keyhole mode welds were used to produce specimens. Closer examination of the fusion zone crack regions reveals the cracking is a result of thermal stress, shape of welds root and impurities segregation. The defects type relate to the weld parameters, the cracks nucleate easily at conduction mode weld, and the blowholes appear easily in keyhole mode weld.

Original language	English
Pages (from-to)	1588-1591
Number of pages	4
Journal	Xiyou Jinshu Cailiao Yu Gongcheng/Rare Metal Materials and Engineering
Volume	34
Issue number	10
State	Published - Oct 2005
Externally published	Yes

Keywords

Be/Al
Nb:YAG laser
Segregation
Weld cracking

Cite this

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title = "Defects in Be/Al laser welding",

abstract = "An investigation was conducted to determine the causes of weld defects in laser Be/Al weldments. In agreement with earlier studies, features on the fracture surfaces consistent with hot shortness cracking were observed. In this paper, conduction mode welds and keyhole mode welds were used to produce specimens. Closer examination of the fusion zone crack regions reveals the cracking is a result of thermal stress, shape of welds root and impurities segregation. The defects type relate to the weld parameters, the cracks nucleate easily at conduction mode weld, and the blowholes appear easily in keyhole mode weld.",

keywords = "Be/Al, Nb:YAG laser, Segregation, Weld cracking",

author = "Guojian Hao and Zhi Lin and Junpin Lin and Yanli Wang and Guoliang Chen",

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language = "英语",

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T1 - Defects in Be/Al laser welding

AU - Hao, Guojian

AU - Lin, Zhi

AU - Lin, Junpin

AU - Wang, Yanli

AU - Chen, Guoliang

PY - 2005/10

Y1 - 2005/10

N2 - An investigation was conducted to determine the causes of weld defects in laser Be/Al weldments. In agreement with earlier studies, features on the fracture surfaces consistent with hot shortness cracking were observed. In this paper, conduction mode welds and keyhole mode welds were used to produce specimens. Closer examination of the fusion zone crack regions reveals the cracking is a result of thermal stress, shape of welds root and impurities segregation. The defects type relate to the weld parameters, the cracks nucleate easily at conduction mode weld, and the blowholes appear easily in keyhole mode weld.

AB - An investigation was conducted to determine the causes of weld defects in laser Be/Al weldments. In agreement with earlier studies, features on the fracture surfaces consistent with hot shortness cracking were observed. In this paper, conduction mode welds and keyhole mode welds were used to produce specimens. Closer examination of the fusion zone crack regions reveals the cracking is a result of thermal stress, shape of welds root and impurities segregation. The defects type relate to the weld parameters, the cracks nucleate easily at conduction mode weld, and the blowholes appear easily in keyhole mode weld.

KW - Be/Al

KW - Nb:YAG laser

KW - Segregation

KW - Weld cracking

UR - https://www.scopus.com/pages/publications/27944436198

M3 - 文章

AN - SCOPUS:27944436198

SN - 1002-185X

VL - 34

SP - 1588

EP - 1591

JO - Xiyou Jinshu Cailiao Yu Gongcheng/Rare Metal Materials and Engineering

JF - Xiyou Jinshu Cailiao Yu Gongcheng/Rare Metal Materials and Engineering

IS - 10

ER -

Defects in Be/Al laser welding

Abstract

Keywords

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