Effect of Annealing Temperature on Microstructure and Properties of Cold Drawn Tube

Cai Tang; Jun Wen; Hui Ji Fan

doi:10.4028/www.scientific.net/KEM.871.87

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HomeKey Engineering MaterialsKey Engineering Materials Vol. 871Effect of Annealing Temperature on Microstructure...

Effect of Annealing Temperature on Microstructure and Properties of Cold Drawn Tube

Abstract:

The annealing process of an improved Q420 cold drawn tube was studied by using different annealing temperatures (430°C, 450°C, 470°C, 490°C and 510°C) with a same annealing holding time (3h). The effect of different annealing temperatures on the mechanical properties, microstructure and fracture features of the cold drawn tube was studied by means of tensile test, microstructure observation and scanning electron microscopy analysis. The results show that, annealing temperature has great influence on the strength and plasticity of the cold drawn tube. When the annealing temperature increased to 450°C, banded microstructure was mitigated and the pearlite is relatively dispersed. The tensile fracture morphology under the annealing temperature of 450°C has more dimples and deeper bremsstrahlung than other annealing temperatures. The best annealing process of the cold drawn tube was 450°C×3h. Under this annealing process, the cold drawn tube with good strength and toughness can be obtained.

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Periodical:

Key Engineering Materials (Volume 871)

Pages:

87-91

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.871.87

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Online since:

January 2021

Authors:

Cai Tang, Jun Wen, Hui Ji Fan

Keywords:

Annealing Temperature, Cold Drawn Tube, Microstructure

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References

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