Microstructure and Mechanical Properties of Dual-Phase Steels by Combining Adjusted Initial Microstructures and Severe Plastic Deformation

บทความในวารสาร


ผู้เขียน/บรรณาธิการ


กลุ่มสาขาการวิจัยเชิงกลยุทธ์


รายละเอียดสำหรับงานพิมพ์

รายชื่อผู้แต่งSatjabut P., Kalhor A., Uthaisangsuk V., Mirzadeh H.

ผู้เผยแพร่Wiley

ปีที่เผยแพร่ (ค.ศ.)2021

วารสารSteel Research International (1611-3683)

Volume number93

Issue number5

นอก1611-3683

eISSN1869-344X

URLhttps://www.scopus.com/inward/record.uri?eid=2-s2.0-85120850620&doi=10.1002%2fsrin.202100596&partnerID=40&md5=37acadd7bc4b62cbafb80e54a8aeeab9

ภาษาEnglish-Great Britain (EN-GB)


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บทคัดย่อ

Herein, the effects of initial microstructure in combination with the severe plastic deformation on the developed microstructures and mechanical properties of dual-phase (DP) steels are investigated. DP steels are produced by an intercritical annealing from the preliminarily heat-treated samples with different initial microstructures. The constrained groove pressing (CGP) process is additionally applied before the final intercritical annealing step. It is found that the martensitic and tempered martensitic microstructures lead to DP steels with a good balance of strength and elongation because of finer and more uniformly dispersed martensitic islands. The ferrite/pearlite banded initial microstructure is not a proper choice for intercritical annealing as all mechanical properties become worse. The CGP can be employed before intercritical annealing for refining microstructure and enhancing damage tolerance of DP steels. Nevertheless, the impacts of the CGP process on the resulted strength of DP steels are obviously different depending on the initial microstructures. The amounts, sizes, and distributions of dimples and cleavage facets on the fracture surfaces of DP steels correlate well with the corresponding microstructures and tensile characteristics. © 2021 Wiley-VCH GmbH


คำสำคัญ

initial microstructures


อัพเดทล่าสุด 2023-03-10 ถึง 10:34