Catalogo Articoli (Spogli Riviste)

OPAC HELP

Titolo:
MOLECULAR-DYNAMICS SIMULATION OF HYDROGEN ENHANCING DISLOCATION EMISSION
Autore:
ZHOU GH; ZHOU FX; ZHAO XD; ZHANG WQ; CHEN NX; WAN FR; CHU WY;
Indirizzi:
UNIV SCI & TECHNOL BEIJING,DEPT MAT PHYS BEIJING 100083 PEOPLES R CHINA CHINESE ACAD SCI,INST MECH BEIJING 100080 PEOPLES R CHINA UNIV SCI & TECHNOL BEIJING,DEPT PHYS BEIJING 100083 PEOPLES R CHINA
Titolo Testata:
SCIENCE IN CHINA SERIES E-TECHNOLOGICAL SCIENCES
fascicolo: 2, volume: 41, anno: 1998,
pagine: 176 - 181
SICI:
2095-0624(1998)41:2<176:MSOHED>2.0.ZU;2-4
Fonte:
ISI
Lingua:
ENG
Soggetto:
DEFORMATION; FRACTURE;
Keywords:
HYDROGEN; DISLOCATION EMISSION; MOLECULAR DYNAMICS; COMPUTER SIMULATION;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Science Citation Index Expanded
Citazioni:
11
Recensione:
Indirizzi per estratti:
Citazione:
G.H. Zhou et al., "MOLECULAR-DYNAMICS SIMULATION OF HYDROGEN ENHANCING DISLOCATION EMISSION", SCI CHINA E, 41(2), 1998, pp. 176-181

Abstract

The interactive pair potential between Al and H is obtained based on the ab initio calculation and the Chen-Mobius 3D lattice inversion formula. By utilizing the pair potentials calculated, the effects oi hydrogen on the dislocation emission from crack tip have been studied. Thesimulated result shows that hydrogen can reduce the cohesive strengthfor Al single crystal, and then the critical stress intensity factor for partial dislocation emission decreases from 0.11 MPa root m (C-H =0) to 0.075 MPa root m (C-H=0.72%) and 0.06 MPa root m (C-H = 1.44%). This indicates thar hydrogen can enhance the dislocation emission. The simulation also shows that atoms oi hydrogen can gather and turn into small bubbles, resulting in enhancement of the equilibrium vacancy concentration.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 28/01/20 alle ore 14:40:31