Formability of a HSAS based on hot processing maps and texture analyses

Zhiqiang Yang, Ligang Liu, Tongguang Zhai, Chunmei Zhao, Hui Yu, Qiang Li

Research output: Contribution to journalArticlepeer-review

1 Scopus citations

Abstract

Aiming to improve the formability of a HSAS Docol 1500 Bor, hot processing maps were obtained based on Prasad, Babu and Murty instability criteria. The hot processing maps based on the above instability criteria are similar and the explanation of its similarity is given. Recrystallization and misorientation in typical quenched specimens were observed by using SEM with a EBSD system. It was found that the fraction values of HAGBs in quenched martensite are all below 0.4 under experimental conditions. Flow location bands occurs at lower deformation temperatures and higher strain rates. The textures in martensite mainly include 110//ND and 110//RD components. Based on N-W OR, the textures in deformed austenite are mostly 111//ND and 112//RD components. Prasad and Babu instability criteria are more conservative than Murty instability criterion in obtaining the processing maps of the tested steel. To reduce the anisotropy of quenched workpieces because of the textures at room temperature, the quenching temperature in the stamping process of the tested steel should be lower.

Original languageEnglish
Article number076538
JournalMaterials Research Express
Volume6
Issue number7
DOIs
StatePublished - Apr 10 2019

Bibliographical note

Funding Information:
Original content from this work may be used under the terms of the . Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI. National Natural Science Foundation of China https://doi.org/10.13039/501100001809 51205342 Major Scientific and Technological Specialities of High-grade CNC Machine Tools and Basic Manufacturing Equipment 2018ZX04023002 Natural Science Foundation of Hebei Province of China E2016203217 yes � 2019 IOP Publishing Ltd Creative Commons Attribution 3.0 licence

Publisher Copyright:
© 2019 IOP Publishing Ltd.

Keywords

  • deformation
  • high strength steel
  • instability criterion
  • processing map
  • texture

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Biomaterials
  • Surfaces, Coatings and Films
  • Polymers and Plastics
  • Metals and Alloys

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