[Kovove materialy - Metallic materials]
    Sat - June 24, 2017 - 22:40 No. of hits : 825187 ISSN 1338-4252 (online) ISSN 0023-432X (printed)
© Institute of Materials and Machine Mechanics, Slovak Academy of Sciences, Bratislava, Slovak Republic

VOLUME 55 (2017), Issue 1

Structural evolution and wear properties of the laser melted deposited nanocrystalline composites on TA7
MA, Q. G., GAO, X., LI, J. Q.
vol. 55 (2017), no. 1,

Ni60-NB-Ag was firstly used to fabricate composites to increase the wear resistance of TA7 (Ti-5Al-2.5Sn) titanium alloy surface by means of a laser melted deposited (LMD) technique. Experimental results revealed that a large quantity of the interdendritic lamellar eutectics, the nanoscale particles (NP), and the amorphous structure were formed in such composites. During an LMD process, great amounts of Ag were released from the pre-placed layer, which increased the number of the nucleation points, favoring the formation of a fine microstructure and also the NP. However, too high Ag content led the micro-cracks to be produced. Compared with a TA7 substrate, an improvement of the wear resistance was observed for such LMD composites.

Key words
metal-matrix composites, surface properties, laser technique, nano-materials

[open article.pdf] Full text (570 KB)

[IMMS SAS]      UMMS SAV - Bratislava (SK)   ver. 1.6.0   (oš)        [go to HOME PAGE]

Full title of this journal is bilingual: Kovové materiály - Metallic Materials.
The official abbreviation in accordance with JCR ISI is Kovove Mater.

Article abstracts updated: 2017-05-29 10:28     
Articles in press revised: 2017-06-21 07:05    
Full text pdf uploaded: 2017-05-29 09:42   
Information updated: 2017-05-10 17:18  

© OldSoft, 2004, …, 2017