Influence of nitride (Cr[sub 2]N) precipitation on the plastic flow behavior of high-nitrogen austenitic stainless steel

Journal Article · Sun Jan 15 00:00:00 EST 1995 · Scripta Metallurgica et Materialia; (United States)

DOI:https://doi.org/10.1016/S0956-716X(99)80048-X· OSTI ID:6822279

Simmons, J W ^[1]

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1. Bureau of Mines, Albany, OR (United States). Albany Research Center

The effectiveness of nitrogen as an interstitial solid-solution strengthener has led to the production of high-nitrogen stainless steels with nitrogen concentrations approaching 1 wt% and yield strengths exceeding those of the AISI 304 and 316 alloys by up to 300--400% in the annealed condition. However, high-nitrogen stainless steels are susceptible to nitride (Cr[sub 2]N) formation within the temperature range of approximately 500--1,050 C. Several studies have shown that nitride precipitation has a severe embrittling effect in these materials, but the effect of nitrides on the plastic flow characteristics has not been described in detail. This article describes the influence that grain boundary and cellular nitride precipitation has on the tensile properties, strain hardening, and plastic flow behavior of a typical high-nitrogen austenitic stainless steel.

• OSTI ID: 6822279
• Journal Information: Scripta Metallurgica et Materialia; (United States), Vol. 32:2; ISSN 0956-716X
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
CHROMIUM NITRIDES
PRECIPITATION
NITROGEN
METALLURGICAL EFFECTS
STAINLESS STEELS
MECHANICAL PROPERTIES
MATHEMATICAL MODELS
ALLOYS
CHROMIUM COMPOUNDS
ELEMENTS
HIGH ALLOY STEELS
IRON ALLOYS
IRON BASE ALLOYS
NITRIDES
NITROGEN COMPOUNDS
NONMETALS
PNICTIDES
SEPARATION PROCESSES
STEELS
TRANSITION ELEMENT COMPOUNDS
360103* - Metals & Alloys- Mechanical Properties
360102 - Metals & Alloys- Structure & Phase Studies