Catalogo Articoli (Spogli Riviste)

OPAC HELP

Titolo:
HARDNESS, MICROSTRUCTURE AND SURFACE CHARACTERIZATION OF LASER GAS NITRIDED COMMERCIALLY PURE TITANIUM USING HIGH-POWER CO2-LASER
Autore:
SELVAN JS; SUBRAMANIAN K; NATH AK; GOGIA AK; BALAMURUGAN AK; RAJAGOPAL S;
Indirizzi:
ANNA UNIV,DEPT PHYS CHENNAI 600025 INDIA CTR ADV TECHNOL INDORE MADHYA PRADESH INDIA DMRL HYDERABAD ANDHRA PRADESH INDIA INDIRA GANDHI CTR ATOM RES,DIV MAT SCI KALPAKKAM 603102 TAMIL NADU INDIA
Titolo Testata:
Journal of materials engineering and performance
fascicolo: 5, volume: 7, anno: 1998,
pagine: 647 - 655
SICI:
1059-9495(1998)7:5<647:HMASCO>2.0.ZU;2-K
Fonte:
ISI
Lingua:
ENG
Soggetto:
PLASMA; TIN; NITRIDATION; TI-6AL-4V; BEHAVIOR; COATINGS; NITROGEN; ALLOYS;
Keywords:
DENDRITIC MICROSTRUCTURE; LASER GAS ALLOYING; LASER NITRIDING; LASER SURFACE MODIFICATION; TITANIUM NITRIDE;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
28
Recensione:
Indirizzi per estratti:
Citazione:
J.S. Selvan et al., "HARDNESS, MICROSTRUCTURE AND SURFACE CHARACTERIZATION OF LASER GAS NITRIDED COMMERCIALLY PURE TITANIUM USING HIGH-POWER CO2-LASER", Journal of materials engineering and performance, 7(5), 1998, pp. 647-655

Abstract

Surface nitriding of commercially pure (CP) titanium was carried out using high power CO2 laser at pure nitrogen and dilute nitrogen (N-2 Ar) environment. The hardness, microstructure. and melt pool configuration of the laser melted titanium in helium and argon atmosphere was compared with laser melting at pure and dilute nitrogen environment. The hardness of the nitrided layer was of the order of 1000 to 1600 HV,The hardness of the laser melted titanium in the argon and helium atmosphere was 500 to 1000 HV, Using x-ray analysis the formation of TiN and Ti2N phase was identified in the laser nitrided titanium. The presence of nitrogen in the nitrided zone was confirmed using secondary ion mass spectroscopy (SIMS) analysis. The microstructures revealed densely populated dendrites in the sample nitrided at 100 % N-2 environment and thinly populated dendrites in dilute environment. The crack intensity was large in the nitrided sample at pure nitrogen, anti few cracks were observed in the 50 % N-2 + 50 % Ar environment.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 01/12/20 alle ore 18:59:01