Impact properties of 304L stainless steel GTAW joints evaluated by high strain rate of compression tests

Woei Shyan Lee, Chi Feng Lin, Chen Yang Liu, Fan Tzung Tzeng

研究成果: Article同行評審

14 引文 斯高帕斯(Scopus)

摘要

This paper presents an investigation into the high velocity impact of 304L stainless steel gas tungsten arc welded (GTAW) joints at strain rates between 10-3 and 7.5 × 103 s-1 using a compressive split-Hopkinson bar. The results show that the impact properties and fracture characteristics of the tested weldments depend strongly on applied strain rate. This rate-dependent behavior is in good agreement with model predictions using the hybrid Zerilli-Armstrong constitutive law. It is determined that the tested weldments fail as a result of adiabatic shearing. The fracture surfaces of the fusion zone and base metal regions are characterized by the presence of elongated dimples. The variation in the observed dimple features with strain rate is consistent with the results of the impact stress-strain curves.

原文English
頁(從 - 到)335-344
頁數10
期刊Journal of Nuclear Materials
335
發行號3
DOIs
出版狀態Published - 2004 十二月 1

All Science Journal Classification (ASJC) codes

  • 核能與高能物理
  • 材料科學(全部)
  • 核能與工程

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