Acoustic damping characterization and microstructure evolution during high-temperature creep of an austenitic stainless steel

被引：12

作者：

Ohtani, T ^{[1
]}

机构：

[1] Ebara Res Co Ltd, Mat Lab, Fujisawa, Kanagawa 2518502, Japan

来源：

METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE | 2005年 / 36A卷 / 11期

关键词：

D O I：

10.1007/s11661-005-0070-y

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We studied the microstructure evolution of an austenitic stainless steel, Type 316L, subjected to tensile creep at 973 K through the monitoring of shear-wave attenuation and velocity using electromagnetic acoustic resonance (EMAR). Contactless transduction based on the Lorentz force mechanism is the key to establishing a monitor for microstructural change in the bulk of metals with high sensitivity. In the short interval, 60 to 70 pct of the creep life, attenuation experiences a peak, independent of the applied stress. A drastic change in dislocation mobility and rearrangement interrupted this novel phenomenon, as is supported by observations using a scanning electron microscope (SEM) and a transmission electron microscope (TEM). The EMAR exhibited the potential for the assessment of damage advance and the prediction of the remaining creep life of metals.

引用

页码：2967 / 2977

页数：11

共 64 条

[1] ACCURACY REQUIREMENTS FOR LIFE ASSESSMENT [J].

AUERKARI, P ;

SALONEN, J .

INTERNATIONAL JOURNAL OF PRESSURE VESSELS AND PIPING, 1989, 39 (1-2) :135-144

[2]

BARRETT CR, 1966, T AM SOC MET, V59, P3

[3] Integration of NDT into life time management [J].

Becker, R ;

Dobmann, G ;

Kroning, M ;

Reiter, H ;

Schneider, E .

INTERNATIONAL JOURNAL OF PRESSURE VESSELS AND PIPING, 1997, 73 (01) :11-17

[4]

BIRRING AS, 1989, REV PROGR QUANTITATI, V8, P1833

[5]

CADEK J, 1988, CREEP METALLIC MAT, P95

[6]

DELONG RT, 1987, AM SOC TESTING MAT, pE12

[7] MAGNESCOPE - APPLICATIONS IN NONDESTRUCTIVE EVALUATION [J].

DEVINE, MK ;

JILES, DC ;

EICHMANN, AR ;

KAMINSKI, DA ;

HARDWICK, S .

JOURNAL OF APPLIED PHYSICS, 1993, 73 (10) :5617-5619

[8] Nondestructive characterization of materials - A growing demand for describing damage and service-life-relevant aging processes in plant components [J].

Dobmann, G ;

Meyendorf, N ;

Schneider, E .

NUCLEAR ENGINEERING AND DESIGN, 1997, 171 (1-3) :95-112

[9] NONDESTRUCTIVE CHARACTERIZATION OF MATERIALS (ULTRASONIC AND MICROMAGNETIC TECHNIQUES) FOR STRENGTH AND TOUGHNESS PREDICTION AND THE DETECTION OF EARLY CREEP DAMAGE [J].

DOBMANN, G ;

KRONING, M ;

THEINER, W ;

WILLEMS, H ;

FIEDLER, U .

NUCLEAR ENGINEERING AND DESIGN, 1995, 157 (1-2) :137-158

[10]

DOOLEY RB, 1987, EPRICS5208

← 1 2 3 4 5 6 7 →