Study on laser welding of AISI 316L austenitic stainless steel

被引：0

作者：

Dontu, O. ^{[1
]}

Ocana Moreno, J. L. ^{[2
]}

Ciobanu, R. ^{[1
]}

Branzei, M. ^{[3
]}

Besnea, D. ^{[1
]}

机构：

[1] Univ Politehn Bucuresti, Dept Mechatron & Precis Mech, Bucharest 060042, Romania

[2] Ctr Laser UPM, Madrid 028031, Spain

[3] Univ Politehn Bucuresti, Metall Mat Sci, Dept Met Phys, Bucharest 060042, Romania

来源：

JOURNAL OF OPTOELECTRONICS AND ADVANCED MATERIALS | 2015年 / 17卷 / 9-10期

关键词：

Laser welding; Hardness; Bead profile; AISI 316L austenitic stainless steel; MECHANICAL-PROPERTIES; MICROSTRUCTURE; SYSTEM; PARTS;

D O I：

暂无

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

In this paper is presented a complex analysis for laser welding of AISI 316L austenitic stainless steel in case of three different laser sources: Nd:YAG - lambda=1060nm, Laser Diode - lambda=904 nm and CO2 laser - lambda=10.6 mu m. The laser power input has a specific nonlinear influence on the absorptivity of material for each laser radiation wavelength. In case of CO2 laser unit, for the welding parameters selected (laser spot diameter-3mm, speed-10mm/s), by increasing the power from 2kW to 2.5kW, the weld bead geometry undergoes minimal changes, meaning energy losses. In contrast, in case of Laser Diode unit, the weld bead geometry undergoes significant changes for the same input parameters. Increasing the initial temperature of the base material around 140 degrees C leads to a partial disappearance of the plastic deformation tensions in the material (shear bends), without affecting the structure (grain size and roundness).

引用

页码：1444 / 1449

页数：6

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