Abstract
In the paper, a typical part of B1500HS boron steel was formed using the hot stamping tools, and the effect of austenitization temperature on the microstructure and mechanical properties of B1500HS boron steel was studied. The results show that, the temperature of steel plate has a significant effect on the temperature of hot stamping tools, and the temperature of punch rises at a faster speed than that of die in the hot stamping process. The austenitization temperature has a significant effects on the size of martensite. The cooling rate of steel plate has a significant effect on the tensile strength when the austenitization temperature is 870 °C. The fracture of sample austenitized at 870 °C or 900 °C is the dimple, the fracture of sample austenitized at 930 °C or 960 °C is the mixture of quasicleavage and dimple.
Highlights
In order to reduce vehicle weight and tail-gas emission without compromising crash performance, most of automotive manufacturers focus upon application of new materials besides optimizing framework of vehicle
Mechanical performance of BIW can be improved with the weight reduction by using advanced high-strength steel (AHSS) or ultra high-strength steel (UHSS)
The heating rate of steel plates in the furnace SX2-4-10G is much higher than 200 ć/h, and the heating rate has a significant effect on the temperature Ac1 and Ac3 [6]
Summary
In order to reduce vehicle weight and tail-gas emission without compromising crash performance, most of automotive manufacturers focus upon application of new materials besides optimizing framework of vehicle. Mechanical performance of BIW can be improved with the weight reduction by using advanced high-strength steel (AHSS) or ultra high-strength steel (UHSS). Formability of AHSS or UHSS reduces remarkably with the enhancement of strength, and some defects, such as poor forming quality, cracking and spring-back, are easy to appear in the cold stamping. Lots of research about the hot stamping of quenchable boron steel has been done in the world, such as the investigation of high-strength steel forming technology [1], formability of quenchable boron steel in the hot stamping [2], design of hot stamping tools with cooling system [3], constitutive relationships of boron steel at high temperature [4] and numerical simulation of hot stamping process [5]. A typical part of B1500HS boron steel is formed using the hot stamping tools, and the effect of austenitization temperature on the microstructure and mechanical properties of B1500HS boron steel is studied
Sign-in/Register to view highlights & summary Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
