The effects of different Zr additions (0.05wt.%-0.5wt.%) on the structure and tensile properties an Al-4.5Cu-0.3Mg-0.05Ti (wt.%) alloy solidified under a high cooling rate (18 °C·s-1), in as-cast T6 heat-treated conditions were studied. consists equiaxed grains α-Al with average size 64 μm which is unaffected by additions, indicating ineffectiveness grain refinement alloy. Scanning electron mic...

The Ti–Al3Ti–Al laminated composites with different Al contents were prepared by vacuum hot pressing sintering technology. effects of content on the dynamic mechanical properties studied using combination Split Hopkinson Pressure Bar experiment and finite element analysis. results showed that changes fracture mode composites. without have higher brittleness lower strain. containing 10–15%Al bet...

* ايجولونكت دهعم – دادغب , ينقتلا ميلعتلا ةئيه / دادغب ** مسق ةسدنه نداعملاو جاتنلاا , ةيجولونكتلا ةعماجلا / دادغب *** ايجولونكتلاو مولعلا ةرازو / دادغب 497 مييقت لكآتلا ةمواقم طاسوا يف ةيتيركنوكلا ةناسرخلا ةيوقت يف مدختسملا ديدحلل ةفلتخم ةيئام بوقعي فسوي ثيل * شابك ةرهزلا دبع لحز ** و حلاص دمحم قفوم *** 2010/12/21 خیرات میدقتلا : 2011/6/2 خیرات لوبقلا : ةصلاخلا ف حيلستلا ديدحل ...

The objective of this research is to study the effect Zr on L-PBF processability, microstructure, and microhardness an AlZnMgCu-Zr alloy. Two AlZnMgCu-0.5 1.5 wt% pre-alloyed powders were produced by casting followed gas atomization. In addition, excess Mg Zn was added target compositions compensate for vaporization during L-PBF. as-atomized as-built heat treated specimens characterized via sca...

Supersaturated Al-Ti-Cr alloys were produced by a continuous electron beam evaporation technique. The as-deposited alloy sheets were fcc supersaturated solid solution with an average grain size of about 400 nm. Due to the fine grain size, the hardness of the alloy was as high as 270Hv. The sheet showed age hardening, and the peak hardness of 340Hv was obtained after aging at 623K for 900 s, in ...