Edge fracture of the first and third-generation high-strength steels : DP1000 and QP1000

Advanced high-strength steels (AHSS) have shown profound progress in improving tensile ductility or global formality in the last decades over three generations. For a complete assessment of both the global and local formability, this study aims to characterize and compare the tensile and edge fracture behavior of the first and third-generation AHSS (dual-phase steel and quenching & partitioning steel) with the same nominal strength level of 980 MPa. Uniaxial tensile tests are performed to characterize the tensile properties. Hole expansion tests are conducted with two edge conditions based on separated preparation techniques (waterjet with polishing and punching) to investigate the edge fracture for both materials. The hole expansion ratios and edge fractures are compared between two materials and two edge conditions. It is concluded that the investigated QP1000 has promoted global formability while the DP1000 shows better local formability due to its damage-tolerant and crack-resistant responses.

DOI

10.1088/1757-899X/1284/1/012021

Citation

Li, Z, Chang, Y, Rong, J, Min, J & Lian, J 2023, ' Edge fracture of the first and third-generation high-strength steels : DP1000 and QP1000 ', IOP Conference Series: Materials Science and Engineering, vol. 1284, 012021 . https://doi.org/10.1088/1757-899X/1284/1/012021

Permanent link to this item

https://urn.fi/URN:NBN:fi:aalto-202309135881

Collections

[article-cris] Insinööritieteiden korkeakoulu / ENG

Show all metadata

Edge fracture of the first and third-generation high-strength steels : DP1000 and QP1000

Access rights

URL

Journal Title

Journal ISSN

Volume Title

Authors

Date

Department

Major/Subject

Mcode

Degree programme

Language

Pages

Series

Abstract

Description

Keywords

Other note

DOI

Citation

Permanent link to this item

Collections