Study on Elevated Temperature Impact Properties of 20MnSiV Steel

Abstract:

The test of 20MnSiV Ⅲ grade reinforced bar is carried out at room temperature and other nine temperatures: 100°C、200°C、300°C、400°C、500°C、600°C、700°C、800°C、900°C.The results show that, the highest impact absorbing energy 137J appeared when the test temperature is 200°C, while the lowest is 75.5J when the temperature is 600°C. While the test temperature is over 700°C and the sample is near damaged, strain softening and serious longitudinal extension is happened in the course of impact, and the gap of the sample can not result in the concentration of stress-strain, fracture mechanism of the material is changed, and then impact absorbing energy had no practical significance.

• Periodical: Advanced Materials Research (Volumes 602-604)
• Pages: 313-317
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.602-604.313
• Online since: December 2012
• Authors: Da Yong You, Yin Lan Bai
• Keywords: Fracture Appearance, High-Temperature, Impact Absorbing Energy, Rebar, Softening

References

[1] Zhang Jin-ping. Application of 20MnSiV Ⅲ-grade steel bar in power plant. Shanghai electric power [J], 2003(2); 173～176.

[2] Zhang Hui. Mechanical performance of Mn steel under fire condition [J]. Physical Testing and Chemical Analysis Part A(Physical Testing), 2006.6（42）；280～284.

[3] Gao Wen-shan，etc. Study on the secondary temperature tempering brittleness of 20MnSi steel bars [J]. Physical Testing and Chemical Analysis Part A(Physical Testing), 1999.2（32），68～69.

[4] Zhang chen，etc. High temperature mechanical properties of steels and analysis on their factors [J]. Continuous casting，2008（6）;6～10.