可时效强化Mg-Sn基合金的研究进展
石章智,张敏,黄雪飞,刘雪峰,张文征

Research Progress in Age-Hardenable Mg-Sn Based Alloys
Zhangzhi SHI,Min ZHANG,Xuefei HUANG,Xuefeng LIU,Wenzheng ZHANG
表1 Mg2Sn (β)析出相和Mg (α)的位向关系(OR)及其形貌[14,16,17,18,23,24,25,26,27,28,29]
Table 1 Orientation relationships (ORs) between β-Mg2Sn precipitates and α-Mg matrix, and morphologies of β-Mg2Sn precipitates (An anti-clockwise rotation of β-lattice with respect to α-lattice is positive, and vice versa. The habit plane (HP) of basal laths or plates is parallel to (0001)α, i.e., the basal plane of hcp Mg. RM refers to row matching, F denotes facet of precipitate, i.e., sharp flat interface between precipitate and matrix)[14,16,17,18,23,24,25,26,27,28,29]
No.ORMorphology
1{110}β//(0001)α, <001>β//<112ˉ0>α,Basal lath, long axis //<112ˉ0>α[24]
<11ˉ0>β//<1ˉ100>α
2{110}β//{0001}α, <11ˉ1>β//<112ˉ0>α,Basal lath, long axis about 3.0°[18] or
<11ˉ2ˉ>β//<1ˉ100>α10.2°[25] away from <1ˉ100>α
3{111}β//{0001}α, <11ˉ0>β//<112ˉ0>α,(I) Basal faceted plate, side facets //{112ˉ}β//{1ˉ100}α;
<112ˉ>β//<1ˉ100>α(II) Faceted particle, F1//{111}β//(0001)α,
F2//{113ˉ}β, F3//{115}β[23]; (III) Basal lath[26]
4{111}β//{0001}α, <112ˉ>β//<112ˉ0>α,(I) Basal lath; (II) Faceted particle[24]
<1ˉ10>β//<1ˉ100>α
5{111}β//{0001}α,Basal faceted plate, side facets //
<11ˉ0>β about -9.2° from <2ˉ110>α{7.05, 7.45ˉ, 0.40}β//{3.16ˉ, 2.16, 1, 0}α[27]
6{110}β//{0001}α, <11ˉ0>β//<112ˉ0>α,Basal lath, long axis //<112ˉ0>α[28]
<001>β//<11ˉ00>α
7{110}β//{0001}α, <1ˉ12>β//<112ˉ0>α,

Basal lath, long axis //<112ˉ0>α[28]

<1ˉ11ˉ>β//<11ˉ00>α
8<011>β//<011ˉ0>α,Inclined lath, when OR angle is 0.39°,
{011ˉ}β about 0.36°~1.20°F1 (i.e., HP) //{011}β//{011ˉ0}α,
from {0001}α OR angle ofF2//{1, 9.1, 9.1ˉ}β//{2, 1ˉ, 1ˉ, 38.3ˉ}α
0.39° appears most frequently(Major side facet, 4.7° from the basal plane)[29]
9<011>β//<011ˉ0>α,Inclined lath, long axis about 39° from the basal plane,
{100}β about -15.6° from {0001}αF1//{111ˉ}β//{21ˉ1ˉ4}α,
RM: g{111ˉ}β//g{21ˉ1ˉ4}α,F2//{31ˉ1}β//{2ˉ114}α, F3//{100}β//{2ˉ, 1, 1, 12}α,
<011>β//<011ˉ0>αF4//{13ˉ3}β//{30ˉ, 15, 15, 2ˉ}α[17]
10<01ˉ1ˉ>β//<011ˉ0>α,Inclined lath, long axis about 39° from the basal plane,
{100}β about 4.0° from {2ˉ110}αF1//{1ˉ1ˉ1}β//{21ˉ1ˉ4}α,
RM, twin OR with respect to OR9F2//{11ˉ1}β//{2ˉ115}α, F3//{100}β//{18ˉ, 9, 9, 2}α[17]
11<011>β//<21ˉ1ˉ0>α,Inclined lath, long axis 79.6° from the basal plane,
{11ˉ1}β about -15.4° from {0001}αF1//{533ˉ}β//{03ˉ31}α,
RM: g{533ˉ}β//g{03ˉ31}αF2//{011ˉ}β//{02ˉ23ˉ}α[14,16]
<011>β//<21ˉ1ˉ0>α
12<011>β//<21ˉ1ˉ0>α,Inclined faceted plate, F1//{511ˉ}β//{011ˉ4}α,
{111ˉ}β about 13.7° from {0001}αwhich is 26.0° from the basal plane,
RM: g{511ˉ}β//g{011ˉ4}αF2 and F3 are 46.8° and 75.3° from the basal plane,
<011>β//<21ˉ1ˉ0>αrespectively[14,16]