Effect of tempering temperature on microstructure and mechanical properties of low alloy steel in quenched tempered conditions

Authors

  • V Yadav
  • A K Singh
  • G Sahoo

Abstract

The effect of tempering temperature on the microstructure and mechanical properties of a low alloy steel has been investigated using optical microscopy, hardness testing and Charpy V-notch impact testing at -20°C, -40°C and -60°C. At first, the laboratory based study revealed that tempering the specimens at 650°C resulted in lowest hardness with highest impact energy. Based on this, the heat-treated industrial steel showed sufficiently high toughness after Charpy V-notch impact testing at -40°C. Fractography after impact testing showed predominately ductile dimple rupture in the sample tempered at 650°C. The presence of decomposed martesitic laths in prior austenite was noticed in the specimens tempered at 650°C and 680°C.

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Author Biography

G Sahoo

Senior Manager, JSPS Fellow.

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Published

2018-06-27

How to Cite

[1]
V. Yadav, A. K. Singh, and G. Sahoo, “Effect of tempering temperature on microstructure and mechanical properties of low alloy steel in quenched tempered conditions”, J. Met. Mater. Miner., vol. 28, no. 1, Jun. 2018.

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Section

Original Research Articles