Acoustic emission from aging-induced martensite formation in cold worked AISI type 304 stainless steel

Journal Article · Tue Feb 01 04:00:00 EST 1994 · Scripta Metallurgica et Materialia; (United States)

DOI:https://doi.org/10.1016/0956-716X(94)90379-4· OSTI ID:5456039

Mukhopadhyay, C K; Kasiviswanathan, K V; Jayakumar, T; Ray, Baldev ^[1]

---

1. Indira Gandhi Centre for Atomic Research, Kalpakkam (India). Div. for PIE and NDT Development

Strain-induced formation of [alpha][prime]-martensite (bcc) from austenite (fcc) occurs in metastable austenitic stainless steels during plastic deformation at ambient temperature and below. The role of [alpha][prime]-martensite as a hardening phase, which increases the strength of the steel, becomes important due to the fact that stress relief or aging treatment of predeformed metastable austenitic stainless steels at temperatures between 498K and 698K increases the amount of [alpha][prime]-martensite. To the authors' knowledge, no investigation has been carried out to show that formation of [alpha][prime] takes place during cooling of AISI 304 type stainless steel after aging at temperatures below 873K, particularly after aging at 673K which is expected to give maximum [alpha][prime] formation upon cooling to the ambient temperature.

• OSTI ID: 5456039
• Journal Information: Scripta Metallurgica et Materialia; (United States), Journal Name: Scripta Metallurgica et Materialia; (United States) Vol. 30:3; ISSN 0956-716X; ISSN SCRMEX
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360101* -- Metals & Alloys-- Preparation & Fabrication
360102 -- Metals & Alloys-- Structure & Phase Studies
360103 -- Metals & Alloys-- Mechanical Properties
ALLOYS
AUSTENITIC STEELS
CHROMIUM ALLOYS
CHROMIUM-NICKEL STEELS
CORROSION RESISTANT ALLOYS
DEFORMATION
FABRICATION
GRAIN BOUNDARIES
HEAT RESISTANT MATERIALS
HEAT RESISTING ALLOYS
HIGH ALLOY STEELS
IRON ALLOYS
IRON BASE ALLOYS
MARTENSITIC STEELS
MATERIALS
MECHANICAL PROPERTIES
MICROSTRUCTURE
NICKEL ALLOYS
PLASTICITY
STAINLESS STEEL-304
STAINLESS STEELS
STEEL-CR19NI10
STEELS
TEMPERATURE DEPENDENCE