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Effects of tungsten addition and heat treatment conditions on microstructure and mechanical properties of microalloyed forging steels

Journal Article


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Abstract


  • In the present work, the effects of tungsten (W) addition and heat treatment conditions on the microstructure, impact toughness and tensile properties of microalloyed forging steels were studied. Four kinds of microalloyed forging steels were produced by varying W additions (0, 0.5, 1 and 2 wt%). Heat treatment was carried out at temperatures ranging from 840 to 950 °C followed by air and furnace cooling. Mechanical tests were used to evaluate the room temperature Charpy impact and tensile properties. The resulting microstructures were analysed via optical microscope (OM), scanning electron microscope (SEM) and transmission electron microscope (TEM). The results show that the microstructure and mechanical properties of the microalloyed forging steels are closely related to the W content. Correct selection of heat treatment temperature and cooling method is very important to enhance the mechanical properties. The optimum heat treatment temperatures obtained in this study are 920, 900, 880 and 860 °C for the steels with 0%, 0.5%, 1% and 2% W, respectively. Both the impact toughness and tensile properties of the microalloyed forging steels have been significantly enhanced after heat treatment at the optimum temperatures followed by air cooling.

Publication Date


  • 2013

Citation


  • Zhao, J., Jiang, Z. & Lee, C. Soo. (2013). Effects of tungsten addition and heat treatment conditions on microstructure and mechanical properties of microalloyed forging steels. Materials Science and Engineering A: Structural Materials: Properties, Microstructure and Processing, 562 144-151.

Scopus Eid


  • 2-s2.0-84870843006

Ro Full-text Url


  • http://ro.uow.edu.au/cgi/viewcontent.cgi?article=2501&context=eispapers

Ro Metadata Url


  • http://ro.uow.edu.au/eispapers/1492

Number Of Pages


  • 7

Start Page


  • 144

End Page


  • 151

Volume


  • 562

Abstract


  • In the present work, the effects of tungsten (W) addition and heat treatment conditions on the microstructure, impact toughness and tensile properties of microalloyed forging steels were studied. Four kinds of microalloyed forging steels were produced by varying W additions (0, 0.5, 1 and 2 wt%). Heat treatment was carried out at temperatures ranging from 840 to 950 °C followed by air and furnace cooling. Mechanical tests were used to evaluate the room temperature Charpy impact and tensile properties. The resulting microstructures were analysed via optical microscope (OM), scanning electron microscope (SEM) and transmission electron microscope (TEM). The results show that the microstructure and mechanical properties of the microalloyed forging steels are closely related to the W content. Correct selection of heat treatment temperature and cooling method is very important to enhance the mechanical properties. The optimum heat treatment temperatures obtained in this study are 920, 900, 880 and 860 °C for the steels with 0%, 0.5%, 1% and 2% W, respectively. Both the impact toughness and tensile properties of the microalloyed forging steels have been significantly enhanced after heat treatment at the optimum temperatures followed by air cooling.

Publication Date


  • 2013

Citation


  • Zhao, J., Jiang, Z. & Lee, C. Soo. (2013). Effects of tungsten addition and heat treatment conditions on microstructure and mechanical properties of microalloyed forging steels. Materials Science and Engineering A: Structural Materials: Properties, Microstructure and Processing, 562 144-151.

Scopus Eid


  • 2-s2.0-84870843006

Ro Full-text Url


  • http://ro.uow.edu.au/cgi/viewcontent.cgi?article=2501&context=eispapers

Ro Metadata Url


  • http://ro.uow.edu.au/eispapers/1492

Number Of Pages


  • 7

Start Page


  • 144

End Page


  • 151

Volume


  • 562