Mg-Zn系合金热裂行为的研究进展
王峰, 白盛巍, 王志, 杜旭东, 周乐, 毛萍莉, 魏子淇, 李瑾伟

Research Progress on Hot Tearing Behavior of Mg-Zn Series Alloys
WANG Feng, BAI Shengwei, WANG Zhi, DU Xudong, ZHOU Le, MAO Pingli, WEI Ziqi, LI Jinwei
表5 复合加入合金元素后Mg-Zn-X-Y(-Z)合金中的第二相及对合金热裂敏感性降低效果最优的第二相[79~81,83,85~87]
Table 5 Secondary phases in Mg-Zn-X-Y(-Z) alloy after the addition of alloying elements and the most effective secondary phase reducing the hot tearing susceptibility of alloys[79-81,83,85-87]

Alloy mass fraction / %

Secondary phase in alloy

Most effective secondary phase reducing the HTS of the alloy

Mg-4.5Zn-xY-yNd (x + y = 6, x = 0, 1, 3, 6)[79]

I (Mg3Zn6Y, Mg3Zn6(Y, Nd)),

W (Mg3Zn3Y2, Mg3Zn3(Y, Nd)2),

T ((MgZn)92Nd8)

W (Mg3Zn3(Y, Nd)2)

Mg-xZn-7Gd-5Y-0.5Zr (x = 0, 3, 7, 13)[80]

Mg5(Gd, Y),

LPSO (Mg12Zn(Gd, Y)),

W (Mg3Zn3(Gd,Y)2),

I (Mg3Zn6(Gd,Y))

Mg3Zn3(Gd, Y)2

Mg-6Zn-1Cu-xY-0.6Zr (x = 0, 1, 2, 3)[81]

MgZnCu, I (Mg3YZn6), MgZn2,

W (Mg3Y2Zn3, Mg3(Zn, Cu)3Y2)

W (Mg3(Zn, Cu)3Y2)
Mg-4Zn-xSn-1Ca (x = 0, 0.5, 1, 2)[83]CaMgSn, Ca2Mg6Zn3Ca2Mg6Zn3
Mg-0.5Zn-4Al-(0.5%-2.0%)Ca-(0.5%-2.0%)La[85]Al11La3, Al2CaAl2Ca

Mg-2Zn-(3 + 0.5x)Y-xAl (x = 0, 2, 3; atomic fraction, %)[86],

Mg-2Zn-3Y-xAl (x = 0, 0.5, 1, 2)[87]

Al2Y + Al3Y, W (Mg3Y2Zn3),

LPSO (Mg12ZnY)

Al2Y