Effects of dynamic impact on mechanical properties and microstructure of special stainless steel weldments

Wuan Yun Hsiao, Shing Hoa Wang, Chih Yuan Chen, Jer Ren Yang, Woei Shyan Lee

研究成果: Article同行評審

10 引文 斯高帕斯(Scopus)

摘要

Variations in weld metal microstructure after impact at different strain rates for three weld metals, SAF 2507 DSS, SAF 2205 DSS and 254 SMO steel, are addressed. The twin grain forms that appear inside the γ grain of duplex stainless steel at low impact strain rates may be caused by adiabatic heat. The needle-like or thick streak-like twins occur in the γ grain of duplex stainless steel, caused by shear stress at a high strain rate. The impact induces dislocation loop formation in the γ phase of 254 SMO steel at low strain rate, but martensite is produced at a high strain rate. The chemical composition affects the stacking fault energy coupled with adiabatic heat to determine the final structure of the impact.

原文English
頁(從 - 到)172-179
頁數8
期刊Materials Chemistry and Physics
111
發行號1
DOIs
出版狀態Published - 2008 9月 15

All Science Journal Classification (ASJC) codes

  • 材料科學(全部)
  • 凝聚態物理學

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