ACOUSTIC-EMISSION AND SELF-ORGANIZED CRITICALITY ASSOCIATED WITH FRACTURE PROCESSES DURING HYDROGEN PRECIPITATION IN NIOBIUM

被引：3

作者：

CANNELLI, G ^{[1
]}

CANTELLI, R ^{[1
]}

CORDERO, F ^{[1
]}

机构：

[1] CNR, IST ACUST OM CORBINO, I-00189 ROME, ITALY

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 1994年 / 211卷

关键词：

D O I：

10.1016/0925-8388(94)90562-2

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Acoustic emission activity was detected in niobium during hydrogen precipitation from solid solution. The observed emission is attributed to the nucleation and propagation of microcracks generated by the misfitting growing precipitate particles. Analysis of the acoustic signals reveals that the distribution of their amplitudes follows the Gutenberg-Ritcher law of earthquakes N(A' > A) similar to A(-c), c = 0.9. The observed power law indicates that during the fracture processes caused by the precipitation, the Nb-H system goes into a self-organized critical state, similar to what occurs in the earth's crust during earthquakes.

引用

页码：544 / 547

页数：4

共 18 条

[1]

Alefeld G., 1978, HYDROGEN METALS BASI

[2] SELF-ORGANIZED CRITICALITY [J].