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is generally higher than the uncorrected value. The dynamic recrystallization takes place during the deformation process, and the average dynamically recrystallized grain size changes with deformation...温度和变形速度,同时还要考虑材料的可成形性以及设备能力. 图7 ln dr与ln Z的关系 Fig.7 Relationship between Zener-Hollomon parameter and grain size of recrystallization 5 结论 1) AZ80镁合金高温热压缩变形过程中,流变应力随变形温度的升高和应变速......
- induced dynamic recrystallization mechanism with the average grain size of 2.1 μm and thermal activated grain growth mechanism with maximum grain size reached to 65 μm, when the true strains are ε≤0.60... mechanism: (1) Mechanical splitting mechanism; (2) Deformation-induced dynamic recrystallization mechanism; (3) Thermal activated grain growth mechanism 第二阶段显微组织演化发生在第2道次到第4道次之间,其机制为形变诱导动态再结晶细化机制,晶粒尺......
is up to 308-320 MPa and elongation reaches 8.0%-13.5%. After double hot-extrusion, the dynamic recrystallization completes totally, and the UTS is up to 310-355 MPa, but the elongation does not change... condition, the speed of dynamic recrystallization is so fast that new nucleus are swallowed before growing and then coarse structure can be formed. While alloys 3 and 4 have finer structure......
to the resistance effect to recrystallization by Al3(Sc,Zr) particles. During the aging process, the strength increases significantly owing to the fine dispersed η′ phases precipitated from the solid... Feng, et al. Scandium and its alloys[M]. Changsha: Central South University Press, 2007: 425. [2] Ocenasek V, Slamova M. Resistance to recrystallization due to Sc and Zr addition to Al-Mg alloys[J......
recrystallization occurs. As the number of ECAPT passes increases, grains are further refined and mechanical properties are largely enhanced. After 4 passes of ECAPT, the microstructure consists of homogeneous.... [19] HUMPHREYS F J. A unified theory of recovery, recrystallization and grain growth, based on the stability and growth of cellular microstructures (Ⅱ): The effect of second-phase particles[J]. Acta......
refinement and excellence mechanical properties. Twinning induced dynamic recrystallization (TDRX) is the main DRX mechanism of BF, which consequently results in ultrafine grains with average grain..., 2008, 18(1): 200-204. [16] Ma Q, Li B, Marin E B, et al Twinning-induced dynamic recrystallization in a magnesium extruded at 450 ℃[J]. Scripta Materialia, 2011, 65(9): 823-826. [17] Pinheiro P......
7075 铝合金再结晶经验模型及应用[J]. 中国有色金属学报, 2013, 23(6): 1507-1515. GUO Hai-long, SUN Zhi-chao, YANG He. Empirical recrystallization model and its application of as-extruded aluminum alloy 7075[J]. The Chinese... of Nonferrous Metals Society of China, 2014, 24(7): 2003-2017. [11] GOURDET S, MONTHEILLET F. A Model of continuous dynamic recrystallization[J]. Acta Metallurgica Sinica, 2003, 51(9): 2685-2699. [12] 熊其平. 碳......
): 119-127. [15] QI G, ZHANG S. Recrystallization of gold alloys for producing fine bonding wires[J]. Journal of Materials Processing Technology, 1997, 68(3): 288-293. [16] CHO J H, CHO J S, MOON J T, LEE J, CHO Y H, KIM Y W, ROLLETT A D, OH K H. Recrystallization and grain growth of cold-drawn gold bonding wire[J]. Metallurgical and Materials Transactions A, 2003, 34: 1113-1125. [17] KO Y G, NAMGUNG......
, 2016, 36(1): 79-83. FAN Cai-he, CHEN Xi-hong, DAI Nan-shan, YANG Jian-jun. Dynamic recrystallization during hot compression deformation in spray-formed Al-9Mg-0.5Mn alloy[J]. Special Casting and Nonferrous Alloys, 2016, 36(1): 79-83. [10] ENGLER O. Texture and anisotropy in the Al-Mg alloy AA 5005- Part I: Texture evolution during rolling and recrystallization[J]. Materials Science......
and better understand the effect of Mo and Ta addition on the cp-Ti and the effect of recrystallization. The EIS results confirm that all titanium samples exhibit passivity in physiological 0.9% NaCl... is in the following order of recrystallized Ti12Mo5Ta> unrecrystallized Ti12Mo5Ta > unrecrystallized Ti12Mo > cp-Ti. Key words: titanium alloys; recrystallization; anodic potentiodynamic curve; Ta; Mo......