Mechanical properties and microstructures of brass alloy H70 subjected to pulse current

Rong Fan*, Kun Min Zhao, Jin Hua Ruan, Jian Cao

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

Abstract

Effects of electric pulse duration and relative peak temperature on mechanical properties were studied by high precision electrically assisted (EA) tension test, and microstructures were observed by metallographic analysis. The results indicated that higher temperature generated by longer electric pulse duration resulted in more reduction in tensile strength. Higher temperature peak generates lower stress recovery at the same prestrain level. When the peak temperature was over than 600℃, stress recovery decreased by 50%, which was nearly the initial yield strength under regular tension test. Recrystallization and grain growth were observed on the specimen after EA tension. Grain refinement and dendritic growth occurred near the fracture area.

Original languageEnglish (US)
Pages (from-to)1322-1326
Number of pages5
JournalDongbei Daxue Xuebao/Journal of Northeastern University
Volume37
Issue number9
DOIs
StatePublished - Sep 1 2016

Keywords

  • Brass alloy H70
  • Electric pulse
  • Mechanical properties
  • Microstructure
  • Recrystallization

ASJC Scopus subject areas

  • Engineering(all)
  • Computer Science Applications
  • Applied Mathematics

Fingerprint Dive into the research topics of 'Mechanical properties and microstructures of brass alloy H70 subjected to pulse current'. Together they form a unique fingerprint.

Cite this