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) dispersoids and precipitate on subgrain boundaries. The precipitation of η phase reduces the solutes available for aging hardening, leading to the increase of the quench sensitivity of this alloy.Key......
μm) is about 2% when the effect of fine dispersoids and concurrent precipitation is negligible. The overall grain number density is correlated linearly with the number densities of P and Cube ({001}<... precipitation [8-11]. Low heating rates promote P texture, when precipitation of dispersoids occurs prior to or concurrently with recrystallization [12]. Recently, P-oriented grains are found in commercially......
solute content of Mn is low and pre-existing dispersoids are relatively coarser, faster recrystallization kinetics is exhibited together with an equiaxed grain structure with mainly cube texture. Key... importance in recrystallization of alloys containing second-phase particles [1-6]. Small and numerous dispersoids (typically formed during homogenization and/or subsequent heat treatments) tend......
for the alloy during the cooling process after the solution treatment. And the η phase nucleates on dispersoids and at grain boundaries. The amount of η phase decreases with increasing cooling rate, and reduces... rate of 5 ℃/min. Precipitates can be found in the grain interiors and at the grain boundaries, as shown in Fig. 2(a). In the grain interiors, precipitates are all attached to Cr-containing dispersoids......
Superior mechanical properties and strengthening mechanisms of lightweight AlxCrNbVMo refractory high-entropy alloys(x = 0, 0.5,1.0) fabricated by the powder metallurgy processByungchul Kang1,Taeyeong Kong1,Ho Jin Ryu2,Soon Hyung Hong31. Department of Material Science and Engineering, Korea Advanced......
precipitates were observed to nucleate on Al3Zr dispersoids when the distance from the quenched end was greater than 38 mm. Key words: Jominy end quench test; quench sensitivity; cooling rate; quench induced... of the as-quenched bar. It is observed in Fig. 7 that plenty of heterogeneous precipitates during the quench mostly nucleate on Al3Zr dispersoids when the distance from the quenched end is above 38 mm. The aspect......
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, but the residual Al8Cu4Er phase cannot dissolve completely. Compared with the single-stage homogenization, both a finer particle size and a higher volume fraction of L12-structured Al3(Er,Zr) dispersoids... microalloyed with Er and Zr elements. The new type Al-Zn-Mg-Cu alloy possesses an outstanding comprehensive performance due to the formation of stable and coherent L12-structured Al3(Er,Zr) dispersoids......
