| About this Abstract |
| Meeting |
13th International Conference on the Technology of Plasticity (ICTP 2021)
|
| Symposium
|
13th International Conference on the Technology of Plasticity (ICTP 2021)
|
| Presentation Title |
New Generation Press Hardening Steels with Tensile Strength of 1.7-2.0GPa and Enhanced Bendability |
| Author(s) |
Jianfeng Wang, Qi Lu, Xiaochuang Xiong, Hongliang Yi |
| On-Site Speaker (Planned) |
Jianfeng Wang |
| Abstract Scope |
Press hardened components are widely used in a vehicle's body structure to increase safety and reduce mass for improved fuel economy. The commercial steel grade is the boron-containing 22MnB5 with 0.22-0.24 in wt% carbon, which can achieve a tensile strength of 1.5GPa. As vehicle lightweighting increasingly becomes a design imperative for automotive industry, it is desired to utilize press hardened components with strength exceeding 1.5Gpa by increasing carbon to 0.30-0.35 in wt%. However, increased carbon content often reduces fracture resistance under bending. This paper investigates bendability of two new press hardening steels. The first steel, with a tensile strength of 2.0Gpa, is coated with aluminum silicon to avoid oxidation and scaling during the hot stamping process. The second steel, with a tensile strength of 1.7Gpa, does not have any pre-coating and yet it is oxidation resistant at hot stamping temperature. Mechanisms of achieving enhanced bendability are also discussed. |
| Proceedings Inclusion? |
Definite: At-meeting proceedings |