Effect of Si content on fracture behaviour change by strain rate in Si steels

Takashi Mizuguchi, Ryota Oouchi, Rintaro Ueji, Yasuhiro Tanaka, Kazunari Shinagawa

Research output: Chapter in Book/Report/Conference proceedingConference contribution

6 Citations (Scopus)

Abstract

Fracture behaviour transitions due to change in the strain rate in steels with various Si content ranging from 2% to 5 wt% were studied. Room-temperature tensile tests were conducted over wide range of strain rates ranging from 10-3 s-1 to 103 s-1. Concerning of the steels with low Si content (no more than 3%), the nominal stress - nominal strain curves represented both uniform and local elongations at all strain rates. On the other hand, in 4% Si steel at a strain rate higher than 10 1 s-1, the tensile sample broke down without local elongation (necking). The stress at breaking was found to be nearly equal to its work hardening rate. The strain rate at which fracture behaviour transition took place in 5% Si steel (10-1s-1) was lower than that in 4% Si steel. TEM observations clarified the existence of deformation twins in the sample that fractured without necking. These results indicated that Si addition is subject to the brittle fractures and that the fracture mechanism transition is closely related with the deformation twinning behaviour.

Original languageEnglish
Title of host publicationPRICM7
Pages1303-1306
Number of pages4
DOIs
Publication statusPublished - Aug 17 2010
Externally publishedYes
Event7th Pacific Rim International Conference on Advanced Materials and Processing, PRICM-7 - Cairns, QLD, Australia
Duration: Aug 2 2010Aug 6 2010

Publication series

NameMaterials Science Forum
Volume654-656
ISSN (Print)0255-5476

Other

Other7th Pacific Rim International Conference on Advanced Materials and Processing, PRICM-7
CountryAustralia
CityCairns, QLD
Period8/2/108/6/10

Fingerprint

Steel
strain rate
Strain rate
steels
elongation
Elongation
work hardening
Twinning
Brittle fracture
twinning
Stress-strain curves
tensile tests
Strain hardening
breakdown
Transmission electron microscopy
transmission electron microscopy
room temperature
curves
Temperature

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

Cite this

Mizuguchi, T., Oouchi, R., Ueji, R., Tanaka, Y., & Shinagawa, K. (2010). Effect of Si content on fracture behaviour change by strain rate in Si steels. In PRICM7 (pp. 1303-1306). (Materials Science Forum; Vol. 654-656). https://doi.org/10.4028/www.scientific.net/MSF.654-656.1303

Effect of Si content on fracture behaviour change by strain rate in Si steels. / Mizuguchi, Takashi; Oouchi, Ryota; Ueji, Rintaro; Tanaka, Yasuhiro; Shinagawa, Kazunari.

PRICM7. 2010. p. 1303-1306 (Materials Science Forum; Vol. 654-656).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Mizuguchi, T, Oouchi, R, Ueji, R, Tanaka, Y & Shinagawa, K 2010, Effect of Si content on fracture behaviour change by strain rate in Si steels. in PRICM7. Materials Science Forum, vol. 654-656, pp. 1303-1306, 7th Pacific Rim International Conference on Advanced Materials and Processing, PRICM-7, Cairns, QLD, Australia, 8/2/10. https://doi.org/10.4028/www.scientific.net/MSF.654-656.1303
Mizuguchi T, Oouchi R, Ueji R, Tanaka Y, Shinagawa K. Effect of Si content on fracture behaviour change by strain rate in Si steels. In PRICM7. 2010. p. 1303-1306. (Materials Science Forum). https://doi.org/10.4028/www.scientific.net/MSF.654-656.1303
Mizuguchi, Takashi ; Oouchi, Ryota ; Ueji, Rintaro ; Tanaka, Yasuhiro ; Shinagawa, Kazunari. / Effect of Si content on fracture behaviour change by strain rate in Si steels. PRICM7. 2010. pp. 1303-1306 (Materials Science Forum).
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