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A high-strength Mg-Ni-Y alloy sheet with a long-period ordered phase prepared by hot-rolling

机译:通过热轧制备具有长周期有序相的高强度Mg-Ni-Y合金薄板

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摘要

Ternary Mg_(90.5)Ni_(3.25)Y_(6.25) (at percent) cast alloy consisting of a long-period ordered (LPO) phase and alpha-Mg was rolled to 70 percent thickness reduction at 623K. After annealing at 673K for 6 h, kink bands of the LPO phase and a-Mg grains of about 700 nm were observed in the Mg_(90.5)Ni_(3.25)Y_(6.25) alloy sheet. The alloy sheet exhibited a yield stress, an ultimate tensile strength and an elongation of 460 MPa, 526 MPa and 8 percent, respectively, at room temperature, and 301 MPa, 345 MPa and 12 percent, respectively, at 523K.
机译:将由长周期有序(LPO)相和α-Mg组成的三元Mg_(90.5)Ni_(3.25)Y_(6.25)(at%)铸造合金在623K轧制至厚度减少70%。在673K退火6小时后,在Mg_(90.5)Ni_(3.25)Y_(6.25)合金薄板中观察到LPO相的扭折带和约700 nm的a-Mg晶粒。该合金板在室温下的屈服应力,极限拉伸强度和伸长率分别为460 MPa,526 MPa和8%,在523K下分别为301 MPa,345 MPa和12%。

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