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Volume 24 Issue 5
May  2017
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文章导航 >  矿物冶金与材料学报（英文）  > 2017  >  24(5): 538-549
A. R. Sufizadehand S. A. A. Akbari Mousavi, Microstructures and mechanical properties of dissimilar Nd:YAG laser weldments of AISI4340 and AISI316L steels, Int. J. Miner. Metall. Mater., 24(2017), No. 5, pp. 538-549. https://doi.org/10.1007/s12613-017-1435-0
Cite this article as:
A. R. Sufizadehand S. A. A. Akbari Mousavi, Microstructures and mechanical properties of dissimilar Nd:YAG laser weldments of AISI4340 and AISI316L steels, Int. J. Miner. Metall. Mater., 24(2017), No. 5, pp. 538-549. https://doi.org/10.1007/s12613-017-1435-0
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研究论文

Microstructures and mechanical properties of dissimilar Nd:YAG laser weldments of AISI4340 and AISI316L steels

  • School of Metallurgy and Materials Engineering, College of Engineering, University of Tehran, Tehran 11155-4563, Iran

  • 通讯作者:

    A. R. Sufizadeh    E-mail: sufizadeh@ut.ac.ir

  • This paper presents studies on the microstructure and mechanical properties of AISI 316L stainless steel and AISI 4340 low-alloy steel joints formed by the Nd:YAG laser welding process. The weld microstructures and heat affected zones (HAZs) were investigated. Austenitic microstructures were observed in all of the samples. The sizes of the HAZs changed when the heat input was varied, and the 316L sides exhibited a larger HAZ. The cooling rates were calculated by measuring the solidification dendrite arm spacing. It is shown that high cooling rates lead to an austenitic microstructure. Tensile tests were carried out, and the results revealed the tensile properties of both the base metals and the weldments. The hardness test results agreed well with the tensile test results.
    • Research Article

    Microstructures and mechanical properties of dissimilar Nd:YAG laser weldments of AISI4340 and AISI316L steels

    + Author Affiliations
      Abstract
    • This paper presents studies on the microstructure and mechanical properties of AISI 316L stainless steel and AISI 4340 low-alloy steel joints formed by the Nd:YAG laser welding process. The weld microstructures and heat affected zones (HAZs) were investigated. Austenitic microstructures were observed in all of the samples. The sizes of the HAZs changed when the heat input was varied, and the 316L sides exhibited a larger HAZ. The cooling rates were calculated by measuring the solidification dendrite arm spacing. It is shown that high cooling rates lead to an austenitic microstructure. Tensile tests were carried out, and the results revealed the tensile properties of both the base metals and the weldments. The hardness test results agreed well with the tensile test results.
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