Mechanical properties and fracture surfaces of thixoformed HP9/4/30 steel

Mohd. Zaidi Omar, H. V. Atkinson, P. Kapranos, Jaharah A Ghani

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

2 Citations (Scopus)

Abstract

Most work in semi-solid metal processing has been focused on relatively low-melting temperature materials such as aluminium, magnesium, tin, lead and their composites. Because of the high melting temperatures and related measurement difficulties, there is relatively small amount of experimental data available on the thixoforming of high temperature materials such as steels. This paper discusses the relationships between tensile tests data and the fracture surfaces of HP9/4/30 steel samples, in as-received and as-thixoformed conditions. Some of the as-thixoformed samples were subjected to commercial heat treatments before the tests were carried out. The as-received samples showed a typical ductile fracture of 'cup' and 'cone' surface appearance. The thixoformed samples, although showing some significant increase in tensile strength values, failed in a brittle manner, with the fracture surfaces showing a 'cobbled' surface appearance. The application of the commercial heat treatment to the thixoformed samples has significantly improved their ductility.

Original languageEnglish
Title of host publicationAIP Conference Proceedings
Pages1185-1190
Number of pages6
Volume907
Publication statusPublished - 2007
Event10TH ESAFORM CONFERENCE ON MATERIAL FORMING - Zaragoza
Duration: 18 Apr 200620 Apr 2006

Other

Other10TH ESAFORM CONFERENCE ON MATERIAL FORMING
CityZaragoza
Period18/4/0620/4/06

Fingerprint

steels
mechanical properties
heat treatment
melting
refractory materials
tensile tests
ductility
tensile strength
magnesium
tin
cones
aluminum
composite materials
temperature
metals

Keywords

  • Fracture surface
  • HP9/4/30
  • Thixoforming

ASJC Scopus subject areas

  • Physics and Astronomy(all)

Cite this

Omar, M. Z., Atkinson, H. V., Kapranos, P., & A Ghani, J. (2007). Mechanical properties and fracture surfaces of thixoformed HP9/4/30 steel. In AIP Conference Proceedings (Vol. 907, pp. 1185-1190)

Mechanical properties and fracture surfaces of thixoformed HP9/4/30 steel. / Omar, Mohd. Zaidi; Atkinson, H. V.; Kapranos, P.; A Ghani, Jaharah.

AIP Conference Proceedings. Vol. 907 2007. p. 1185-1190.

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

Omar, MZ, Atkinson, HV, Kapranos, P & A Ghani, J 2007, Mechanical properties and fracture surfaces of thixoformed HP9/4/30 steel. in AIP Conference Proceedings. vol. 907, pp. 1185-1190, 10TH ESAFORM CONFERENCE ON MATERIAL FORMING, Zaragoza, 18/4/06.
Omar MZ, Atkinson HV, Kapranos P, A Ghani J. Mechanical properties and fracture surfaces of thixoformed HP9/4/30 steel. In AIP Conference Proceedings. Vol. 907. 2007. p. 1185-1190
Omar, Mohd. Zaidi ; Atkinson, H. V. ; Kapranos, P. ; A Ghani, Jaharah. / Mechanical properties and fracture surfaces of thixoformed HP9/4/30 steel. AIP Conference Proceedings. Vol. 907 2007. pp. 1185-1190
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