The effect of nitrogen content on the susceptibility to stress-corrosion cracking of type 20Cr-20Ni and AISI type 310 stainless steels

The effect of nitrogen content on the susceptibilities of type 310 and 20Cr-20Ni stainless steels to stress-corrosion cracking were studied by exposing the U-bend specimens of the alloys containing various nitrogen levels to magnesium chloride solutions boiling at 154°C. It was found that the increase in nitrogen levels up to 0.161 wt.% did not induce cracking in type 20Cr-20Ni alloys even after long exposure times. At the same time, increase in nitrogen content decreased the crack initiation time in type 310 stainless steel and increased the depth of penetration. Furthermore, the rate of propagation of the stress-corrosion cracks in the U-bend stainless steel specimens of type 310 decreased with increase in exposure time.

Name thesis:degree_name

Master of Science

Level thesis:degree_level

masters

Discipline thesis:degree_discipline

Metallurgical Engineering

Department dc:contributor.department

Metallurgical Engineering

Grantor dc:publisher

Virginia Polytechnic Institute and State University

Year dc:date.issued

1972

Author dc:creator

• Narayanan, Ramaswamy

Statement dc:rights

• In Copyright

Licence dc:rights.uri

• http://rightsstatements.org/vocab/InC/1.0/

Language dc:language.iso

en

Handle dc:identifier.uri

http://hdl.handle.net/10919/76203

OAI identifier oai:identifier

oai:vtechworks.lib.vt.edu:10919/76203