Experimental investigation of hydrogen effect on mechanical properties of 304L stainless steel

Yong Jiang, Jianming Gong, Jianqun Tang, Luyang Geng

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

2 Scopus citations

Abstract

Hydrogenation reactor is one of the key equipments in the production process of purified terephthalic acid (PTA).The safe and reliable operation of hydrogenation reactor decides the safety of PTA installation. Service experience has shown that some longitudinal cracks occurred on the internal wall of the 304L stainless steel(SS) hydrogen nozzle. In this paper, a series of electrochemical hydrogen charging tests were carried out for 304L stainless steel at the ambient temperature. The comparison on mechanical properties was investigated before and after hydrogen charging in order to investigate the effect of mechanical properties of 304L SS. Fractography was analyzed by using scanning electron microscope (SEM). The results showed that the mechanical strength of 304L SS was not basically lost after hydrogen charging, but the ductility reduced in a certain extent. The fractography also showed the hydrogen embrittlement effect on the fracture.

Original languageEnglish
Title of host publicationASME 2008 Pressure Vessels and Piping Conference, PVP2008
Pages211-216
Number of pages6
EditionPARTS A AND B
DOIs
StatePublished - 2008
EventASME 2008 Pressure Vessels and Piping Conference, PVP2008 - Chicago, IL, United States
Duration: 27 Jul 200831 Jul 2008

Publication series

NameAmerican Society of Mechanical Engineers, Pressure Vessels and Piping Division (Publication) PVP
NumberPARTS A AND B
Volume6
ISSN (Print)0277-027X

Conference

ConferenceASME 2008 Pressure Vessels and Piping Conference, PVP2008
Country/TerritoryUnited States
CityChicago, IL
Period27/07/0831/07/08

Keywords

  • Hydrogen charging
  • Hydrogen embrittlement
  • Mechanical property
  • Stainless steel

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