Vol 14, No 2 (2010) > Articles >

Hydrogen Absorption Induced Slow Crack Growth in Austenitic Stainless Steels for Petrochemical Pressure Vessel Industries

Ronnie Rusli 1

Affiliations:

  1. Graduate Program of Engineering, University of Indonesia, Jakarta 10430, Indonesia Visiting Research Scientist at Sumittomo Steel Industries Ltd., Research & Development Center, Japan

 

Abstract:

Type 304Land type 309 austenitic stainless steels were tested either by exposed to gaseous hydrogen or undergoing polarized cathodic charging. Slow crack growth by straining was observed in type 304L, and the formation of α‘ martensite was indicated to be precursor for such cracking. Gross plastic deformation was observed at the tip of the notch, and a single crack grew slowly from this region in a direction approximately perpendicular to the tensile axis. Martensite formation is not a necessary condition for hydrogen embrittlement in the austenitic phase.

Keywords: austenitic stainless steels, fracture, hydrogen embrittlement, martensitic, pressure vessels
Published at: Vol 14, No 2 (2010) pages: 111-115
DOI:

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