新型低合金化高强<strong>Mg-0.2Ce-0.2Ca</strong>合金挤压过程中的组织演变机理

新型低合金化高强Mg-0.2Ce-0.2Ca合金挤压过程中的组织演变机理

李景仁, 谢东升, 张栋栋, 谢红波, 潘虎成, 任玉平, 秦高梧

Microstructure Evolution Mechanism of New Low-Alloyed High-Strength Mg-0.2Ce-0.2Ca Alloy During Extrusion

LI Jingren, XIE Dongsheng, ZHANG Dongdong, XIE Hongbo, PAN Hucheng, REN Yuping, QIN Gaowu

表1 典型挤压商用镁合金与新型Mg-0.2Ce-0.2Ca合金力学性能^[20,21]

Table 1 Mechanical properties of commercial Mg alloys and Mg-0.2Ce-0.2Ca alloy^[20,21]

Alloy	Composition / (mass fraction, %)	State^*	$σ_{y}$ _s / MPa	σ_uts / MPa	Elongation / %
Mg	Pure Mg	F	87	185	5
M1	Mg-1.5Mn	F	189	255	12
AZ10	Mg-1.5Al-0.2Zn-0.2Mn	F	155	240	10
AZ31	Mg-3Al-1Zn-0.6Mn	F	200	260	15
AZ61	Mg-6Al-1Zn-0.6Mn	F	230	310	16
AZ80	Mg-8Al-0.5Zn-0.1Mn	T5	275	380	7
ZK21	Mg-2Zn-0.6Zr	F	195	260	4
ZK60	Mg-6Zn-0.5Zr	F	260	340	11
WE43	Mg-4Y-3RE	F	214	296	14
AXM100	Mg-0.6Al-0.28Ca-0.25Mn	T6	253	277	8
MgCeCa	Mg-0.2Ce-0.2Ca	F	364	374	2.5 (this work)