Catalogo Articoli (Spogli Riviste)

OPAC HELP

Titolo:
EMBRYO-DAMAGE INDUCED NUCLEATION OF MICROCRACKS IN AN ALUMINUM-ALLOY UNDER IMPACT LOADING
Autore:
HAN WS; BAI YL;
Indirizzi:
CHINESE ACAD SCI,INST MECH,LNM BEIJING 100080 PEOPLES R CHINA
Titolo Testata:
Acta metallurgica et materialia
fascicolo: 6, volume: 43, anno: 1995,
pagine: 2157 - 2162
SICI:
0956-7151(1995)43:6<2157:EINOMI>2.0.ZU;2-5
Fonte:
ISI
Lingua:
ENG
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Science Citation Index Expanded
Citazioni:
7
Recensione:
Indirizzi per estratti:
Citazione:
W.S. Han e Y.L. Bai, "EMBRYO-DAMAGE INDUCED NUCLEATION OF MICROCRACKS IN AN ALUMINUM-ALLOY UNDER IMPACT LOADING", Acta metallurgica et materialia, 43(6), 1995, pp. 2157-2162

Abstract

The nucleation of microdamage under dynamic loading was investigated through planar impact experiments accomplished with a light gas gun. The microscopic observation of recovered and sectioned specimens showedthat microcracks were nucleated only by cracking of brittle particlesinside material. However, for comparison the in situ static tensile tests on the same material conducted with a scanning electron microscope showed that the microcracks were nucleated by many forms those were fracture of ductile matrix, debonding particles from matrix and cracking of brittle particles. The quantitative metallographic observations of the specimens subjected to impact loading showed that most of the cracked particles were situated on grain boundaries of the aluminium matrix. These facts suggested the concept of critical size and incubation time of submicroscopic cavities in the dynamic case and the mechanism of embryo-damage induced nucleation by fracture of brittle particlesin the aluminium alloy under impact loading was proposed.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 26/11/20 alle ore 07:33:15