Mechanical properties of undercooled aluminium alloys and their implementation in quenching simulation
Mechanical properties of undercooled aluminium alloys and their implementation in quenching simulation
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DOI：
10.1179/1743284711y.0000000085
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发表时间：
2012-07-01
影响因子：
1.8
通讯作者：
Kessler, O.
中科院分区：
文献类型：
--
作者：
Reich, M.;Kessler, O.
热处理模拟所需的非平衡组织铝合金的力学性能是不可用的。为此，在不同淬火速率和淬火结束温度的淬火和变形膨胀仪上，对过冷铝合金AlSi1MgMn和AlZn4中心点5Mg1进行了压缩试验。在淬火结束后立即施加淬火结束温度的压缩载荷。屈服强度和应变硬化等力学性能强烈依赖于淬火速度和淬火结束温度。用有限元方法进行了淬火模拟，得到了随淬火速度和淬火结束温度变化的流动曲线。针对挤压型材在水中和气体喷嘴场中的冷却过程，给出了数值模拟结果。
The mechanical properties of aluminium alloys with non-equilibrium microstructures necessary for heat treatment simulation are not available. Therefore, compression tests of undercooled aluminium alloys such as AlSi1MgMn and AlZn4 center dot 5Mg1 have been performed in a quenching and deformation dilatometer with varying quenching rates and quenching finish temperatures. The compressive load on quenching finish temperature was applied immediately after quenching. The mechanical properties such as yield strength and strain hardening are strongly dependent on quenching rates and finish temperatures of quenching. Flow curves depending on quenching rates and quenching finish temperatures have been implemented in a quenching simulation by the finite element method. For the cooling process of extrusion profiles in water and in a gas nozzle field, the simulation results are presented.