Liquid Metal (Sirius XM) Guy were severed from the channel as part of XM Liquid Metal's signoff. The Hard Attack play list has also been changed, featuring acts that were once heard on the former XM channel Squizz. Mercury has been replaced by Beyond the Pit, which airs in the middle of the night, instead of its former evening drive time slot. As part of the Sirius XM update, Sirius 27 Hard Attack was renamed Liquid Metal (taking the name of the channel that was on XM channel 42). Original subscribers to Sirius and XM have been disappointed because the title change, and others
Liquid metal embrittlement rate sensitive. Temperature also affects the kinetics of LME. An increase in strain rate increases the upper limit temperature as well as the crack propagation rate. In most metal couples LME does not occur below a threshold stress level. Testing typically involves tensile specimens but more sophisticated testing using fracture mechanics specimens is also performed. Many theories have been proposed for LME. The major ones are listed below; All of these models, with the exception of Robertson, utilize the concept of an adsorption-induced surface energy lowering of the solid metal as the central cause of LME. They have succeeded in