compound twins

compound twins

[′käm‚pau̇nd ′twinz]
(crystallography)
Individuals of one mineral group united in accordance with two or more different twin laws.
References in periodicals archive ?
This phenomenon is the direct evidence of the (001) type compound twins of B19', consistent with the behavior observed by TEM [16].
Caption: Figure 8: Atomic structure of (110) compound twins, and the white parallelogram indicates a monoclinic unit cell with the monoclinic angle [beta] ~ 97[degrees].
Twin martensites are conventionally classified into three categories: type I (i.e., the twin plane is a rational crystal plane), type II (i.e., the twin shear is a rational crystallographic direction), and compound twin (both the twin plane and twin shear are rational), the detailed definitions of which are described in the review [15].
As shown in Figure 4(b), a twinned structure with finely dispersed compound twin boundaries (001) is observed in the transformed martensite.