A high-strength Mg–Ni–Y alloy sheet with a long-period ordered phase prepared by hot-rolling
A high-strength Mg–Ni–Y alloy sheet with a long-period ordered phase prepared by hot-rolling
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DOI：
10.1016/j.scriptamat.2008.08.001
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发表时间：
2008-11
影响因子：
6
通讯作者：
T. Itoi;K. Takahashi;H. Moriyama;M. Hirohashi
中科院分区：
文献类型：
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作者：
T. Itoi;K. Takahashi;H. Moriyama;M. Hirohashi
三元Mg90.5Ni3.25Y6.25（at.%）在623 K下将由长周期有序（LPO）相和α-Mg组成的铸造合金轧制至70%的厚度压下量。在673 K退火6 h后，在Mg90.5Ni3.25Y6.25合金中观察到了700 nm左右的LPO相和α-Mg晶粒的扭折带。该合金板材的室温屈服应力、抗拉强度和延伸率分别为460 MPa、526 MPa和8%，523 K时分别为301 MPa、345 MPa和12%。
Ternary Mg90.5Ni3.25Y6.25(at.%) cast alloy consisting of a long-period ordered (LPO) phase and α-Mg was rolled to 70% thickness reduction at 623K. After annealing at 673K for 6h, kink bands of the LPO phase and α-Mg grains of about 700nm were observed in the Mg90.5Ni3.25Y6.25alloy sheet. The alloy sheet exhibited a yield stress, an ultimate tensile strength and an elongation of 460MPa, 526MPa and 8%, respectively, at room temperature, and 301MPa, 345MPa and 12%, respectively, at 523K.