Transactions of Materials and Heat Treatment

Title：Influence of vanadium titanium microalloying on formability for construction steel

Authors： Wei Jie Zhao Lili

Unit： Henan Technical College of Construction Hebei University of Science and Technology

KeyWords： construction steel vanadium titanium microalloying composite addition stamping formability bulging formability

ClassificationCode：TG132.25

year,vol(issue):pagenumber：2021,46(11):244-249

Abstract：

The alloying elements of vanadium and titanium with different contents were added into construction steel Q235, and quasi-static tensile test, cupping test, hole reaming test and microstructure analysis were conducted. The results show that the microstructure, tensile property, bulging formability and stamping formability of the alloy are significantly improved by adding a proper amount of alloying elements of vanadium and titanium. However, too low or too high content of alloying elements is not conducive to obtaining ideal internal structure and formability of the steel plate samples. But, compared with the construction steel Q235 without adding alloying elements, when the steel is added with 0.15%V and 0.1%Ti, the tensile strength, yield strength, elongation after fracture, strain hardening index, cupping value and hole reaming rate of the steel are increased by 33 MPa, 35 MPa, 2.3%, 0.078, 2.2 and 26.1%, respectively.

Funds：

河南省教育厅重点项目（ZJA06027）

作者简介：魏杰（1971-），男，学士，讲师，E-mail：xingmu104029@163.com

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