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在170,190,210,230,250℃的温度下,采用3.7×10~2,7.4×10~2和1.1×10~(-1)min(-1)的应变速率(平均)对Zn-5%Al共晶合金的m-C-δ(或m-k-δ)关系曲线(简称m-δ关系曲线)进行了测定.所有的曲线均随应变的δ增加而快速上升.俟达到某一定的应变量(极限应变量δ1)后。开始缓慢下降并保持平稳直至断裂.Zn-5%A1共晶合金的m-δ关系曲线不存在k_(?)=k_I(k_(I 1),k_(I 2),k_(I 3),……)=k_F(或C_0=C_I(C_(I 1),C_(I 2),C_(I 3),……)=C_F=1)的简单情况.可应用m-δ方程式[4,5]对曲线上各点C值(包括所有的C_I和C_F值)进行计算.C值随δ值的增加成近似的直线上升.直线的斜率在极限应变(δ1)处突然减小.
The mC (subscript x) of Zn-5% Al eutectic alloy was measured at strain rates of 170, 190, 210, 230 and 250 ℃ using strain rates of 3.7 × 10 ~ 2, 7.4 × 10 ~ 2 and 1.1 × 10 ~ -δ (or mk-δ) curve (m-δ for short), and all the curves rose rapidly with increasing δ of the strain, 俟 after reaching a certain amount of strain (the ultimate strain δ1). (M 2), k I 2, k I 3, k I 2, k I 2, k I 2, k I 2, k I 2, ...) = k_F (or C_0 = C_I (C_ (I 1), C_ (I 2), C_ (I 3), ...) = C_F = 1. The m-δ equation [4, 5] Calculate the C value (including all C_I and C_F values) at each point on the curve, with the C value rising linearly upwards as the value of δ increases.The slope of the line abruptly decreases at the ultimate strain (δ1).