Microstructure and mechanical properties of Al–Zr nanocomposite materials

Corrosion behaviour and hardness of in situ consolidated nanostructured Al and Al–Cr alloys produced via high-energy ball milling

“…The yield strength could be extrapolated by hardness assuming, yield strength = hardness/3 [68]. The yield strength of ISC Al-10Cr alloys would therefore be estimated to be ∼1030 MPa, which is approximately two times higher than the yield strength of AA7075-T651 and close to the yield strength of nanostructured Al alloys produced by the consolidation of highenergy ball milled powders [27,[30][31][32][33][34][35][36][37][38][39][40].…”

“…Such a high hardness of Cr containing ISC alloys could be attributed to the nanocrystalline structure, extended solid solubility of Cr, uniformly distributed fine Al-Cr intermetallics, work hardening as introduced by HEBM, and incorporation of elements from processing media and atmosphere. These proposed mechanisms for improved hardness are based on the literature [27,[30][31][32][33][34][35][36][37][38][39][40] as their experimental investigation will require dedicated work and out of scope of this paper.…”

“…There are many instances where high-energy ball milled Al alloys e.g., Al [28,29], Al-Fe [27,30,31], Al-Ti [32,33], Al-Zr [34][35][36], Al-Mg [37][38][39][40] showed a combination of high yield strength and ductility. Such improvement in the mechanical properties was attributed to the dispersion hardening and nanocrystalline structure of highenergy ball milled Al alloys.…”

Erosive wear response of SiCp reinforced aluminium based metal matrix composite: Effects of test environments

“…The advantage of the composites with respect to their substrates reflects in the improvement of the mechanical properties primarily in the increase of the specific elastic modulus, increased hardness, improved wear properties, as well as the resistance to corrosion [3]. Various processing methods have emerged for the synthesis of AMCs, which include stir casting [4], squeeze casting [5], Rheo-casting (compo-casting) [6], spray deposition [7], powder metallurgy (P/M) [8], mechanical alloying [9] etc. Each of these methods has its own advantages and limitations.…”

Cluster characteristics and physical properties of binary Al–Zr intermetallic compounds from first principles studies

“…Among various aluminum-based alloys, the aluminum-zirconium (Al-Zr) system has become one of a promising Al-TM systems [4][5][6][7] since the addition of Zr could optimize the properties of aluminum alloys by refining grain size and inhibiting recrystallization [8][9][10][11]. Besides, Al-Zr alloys are considered as potential candidates for structural materials used in thermal nuclear reactors due to the low absorption cross-sections for thermal neutrons [12]. Therefore, it does not come as a surprise that Al-Zr alloys have been applied extensively in many fields such as aerospace and civil engineering.…”