Influence of inclusions and heat treated microstructure on hydrogen assisted fracture properties of aisi 316 stainless steel

✍ Scribed by Mohan G. Hebsur; John J. Moore

• Publisher: Elsevier Science
• Year: 1985
• Tongue: English
• Weight: 765 KB
• Volume: 22
• Category: Article
• ISSN: 0013-7944
• DOI: 10.1016/0013-7944(85)90162-6

✦ Synopsis

An attempt has been made to assess the influence of nonmetallic inclusions and heat treated microstructure on hydrogen assisted cracking of AISI 316 austenitic steel. The steel obtained in two levels of cleanliness was given solution annealing treatment in the temperature range of 1173-1473 K, and additional sensitization treatment of 973 K for 26 hours. Hydrogen embrittlement of this steel has been studied by charging Charpy and Compact Tension specimens of ASTM specification, with hydrogen through cathodic polarization. It is found that hydrogen embrittlement susceptibility increases with the presence of large size inclusions, larger grain and sensitized microstructure.