Influence of final cooling temperature on the microstructure and mechanical properties of Ti microalloyed automobile beam steel

Han Chufei; Dong Yi; Shi Xiaoguang; Sun Chengqian; Wang Junxiong; Xu Haijian

doi:10.7513/j.issn.1004-7638.2024.05.023

Volume 45 Issue 5

Oct. 2024

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Han Chufei, Dong Yi, Shi Xiaoguang, Sun Chengqian, Wang Junxiong, Xu Haijian. Influence of final cooling temperature on the microstructure and mechanical properties of Ti microalloyed automobile beam steel[J]. IRON STEEL VANADIUM TITANIUM, 2024, 45(5): 173-176, 204. doi: 10.7513/j.issn.1004-7638.2024.05.023

Citation:

Han Chufei, Dong Yi, Shi Xiaoguang, Sun Chengqian, Wang Junxiong, Xu Haijian. Influence of final cooling temperature on the microstructure and mechanical properties of Ti microalloyed automobile beam steel[J]. IRON STEEL VANADIUM TITANIUM, 2024, 45(5): 173-176, 204. doi: 10.7513/j.issn.1004-7638.2024.05.023

Citation:

Han Chufei, Dong Yi, Shi Xiaoguang, Sun Chengqian, Wang Junxiong, Xu Haijian. Influence of final cooling temperature on the microstructure and mechanical properties of Ti microalloyed automobile beam steel[J]. IRON STEEL VANADIUM TITANIUM, 2024, 45(5): 173-176, 204. doi: 10.7513/j.issn.1004-7638.2024.05.023

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Influence of final cooling temperature on the microstructure and mechanical properties of Ti microalloyed automobile beam steel

doi: 10.7513/j.issn.1004-7638.2024.05.023

Han Chufei^{1, 2
,},
Dong Yi^{1, 2},
Shi Xiaoguang^{1, 2},
Sun Chengqian^{1, 2},
Wang Junxiong^{1, 2},
Xu Haijian^{1
,
,}

1.
State Key Laboratory of Metal Materials for Marine Equipment and Applications, Anshan 114009, Liaoning, China
2.
Iron and Steel Research Institute of Angang Group, Anshan 114009, Liaoning, China

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Received Date: 2023-08-05
Available Online: 2024-10-30
Publish Date: 2024-10-30

Abstract

Abstract

In order to reveal the influence of final cooling temperature on microstructure and mechanical properties of Ti-microalloyed automobile 510L beam steel, the hot rolling and laminar cooling (LC) experiment was conducted on 0.11C-1.20Mn-0.055Ti beam steel. The experimental results showed that with the final cooling temperature decreasing, the strength of the steels decreased and the elongation increased. Moreover, the ratio of equiaxed ferrite in the steel decreased while the ratio of pearlite increased. And the average grain gradually refined. The TEM observation results showed that the precipitation of dispersed and fine particles was cubic structure TiC particles in the Ti-microalloyed automobile 510L beam steel. The number density of TiC particles decreased with decreasing the final cooling temperature. The effects of final cooling temperature on the strength of the 510L beam steel combine precipitation strengthening and fine grain strengthening.
- automobile beam steel,
- Ti microalloy,
- precipitates,
- strength,
- microstructure

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References(11)

References

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