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Title: Cryogenic toughness of SMA austenitic stainless steel weld metals. II - Role of nitrogen

Abstract

Experiments on the effects of nitrogen content on the toughness of austenitic stainless steel weld metals type 316L-15 and type 16-8-2-15 at cryogenic temperatures are presented. A lesser number of tests was also made using type 308-16 stainless steel electrodes. Charpy V-notch (CVN) specimens were used to determine CVN impact energy and lateral expansion at -200 F (-129 C), -250 F (-157 C) and -320 F (-196 C), using electrodes covered with either lime-type or titania-type coverings. Results are presented on the variation of lateral expansion and impact energy with temperature, ferrite number and nitrogen content. Regression analysis was used to calculate model equations in order to determine the effects of various constituent concentrations on weld metal toughness. It is concluded that within any grade, optimum properties may be achieved if the weld metal is low in ferrite, nitrogen (less than 0.05%) and carbon (less than 0.04%), as high as possible in nickel, and is deposited by a lime-type electrode.

Authors:
;
Publication Date:
Research Org.:
Teledyne McKay, York, Pa.
OSTI Identifier:
5884389
Alternate Identifier(s):
OSTI ID: 5884389
Resource Type:
Conference
Journal Name:
Weld. Res. (Miami); (United States)
Additional Journal Information:
Journal Volume: 58; Conference: 59. annual meeting of American Welding Society, New Orleans, LA, USA, 3 Apr 1978
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; AUSTENITIC STEELS; CHARPY TEST; FRACTURE PROPERTIES; STAINLESS STEELS; CARBON; CRYOGENICS; FERRITES; NITROGEN; REGRESSION ANALYSIS; ALLOYS; CHROMIUM ALLOYS; CORROSION RESISTANT ALLOYS; DESTRUCTIVE TESTING; ELEMENTS; FERRIMAGNETIC MATERIALS; IMPACT TESTS; IRON ALLOYS; IRON BASE ALLOYS; IRON COMPOUNDS; MAGNETIC MATERIALS; MATERIALS; MATERIALS TESTING; MATHEMATICS; MECHANICAL PROPERTIES; MECHANICAL TESTS; NONMETALS; OXYGEN COMPOUNDS; STATISTICS; STEELS; TESTING; TRANSITION ELEMENT COMPOUNDS 360103* -- Metals & Alloys-- Mechanical Properties

Citation Formats

Szumachowski, E.R., and Reid, H.F. Cryogenic toughness of SMA austenitic stainless steel weld metals. II - Role of nitrogen. United States: N. p., 1979. Web.
Szumachowski, E.R., & Reid, H.F. Cryogenic toughness of SMA austenitic stainless steel weld metals. II - Role of nitrogen. United States.
Szumachowski, E.R., and Reid, H.F. Thu . "Cryogenic toughness of SMA austenitic stainless steel weld metals. II - Role of nitrogen". United States.
@article{osti_5884389,
title = {Cryogenic toughness of SMA austenitic stainless steel weld metals. II - Role of nitrogen},
author = {Szumachowski, E.R. and Reid, H.F.},
abstractNote = {Experiments on the effects of nitrogen content on the toughness of austenitic stainless steel weld metals type 316L-15 and type 16-8-2-15 at cryogenic temperatures are presented. A lesser number of tests was also made using type 308-16 stainless steel electrodes. Charpy V-notch (CVN) specimens were used to determine CVN impact energy and lateral expansion at -200 F (-129 C), -250 F (-157 C) and -320 F (-196 C), using electrodes covered with either lime-type or titania-type coverings. Results are presented on the variation of lateral expansion and impact energy with temperature, ferrite number and nitrogen content. Regression analysis was used to calculate model equations in order to determine the effects of various constituent concentrations on weld metal toughness. It is concluded that within any grade, optimum properties may be achieved if the weld metal is low in ferrite, nitrogen (less than 0.05%) and carbon (less than 0.04%), as high as possible in nickel, and is deposited by a lime-type electrode.},
doi = {},
journal = {Weld. Res. (Miami); (United States)},
number = ,
volume = 58,
place = {United States},
year = {1979},
month = {2}
}

Conference:
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