For the two low-Co alloys, the microhardness (HV) of the secondary phase are only half of that of the matrix phase, which could resist the crack propagating and make the alloys not amenable to pulverization.
Highest value of permeability is at 78.5 percent nickel, which is called Permalloy A. The maximum relative permeability, which can reach a value in the region of 1,000,000 in carefully prepared Permalloy A, makes the alloy useful and superior to iron and silicon iron at low flux densities.
This element could strengthen the passive film of titanium, and made the alloy immune to acid condensation.
The effective stimulation of forming fine MgGe-rich needles by Ge addition makes the alloy possess a high strength after a prolonged ageing.
Because of the highly refined grains imparted by direct extrusion process the mechanical properties of the alloy were improved to a certain extent and it makes the alloy to be used in various engineering claims requiring high strength.
The advantage of the bimodal lamellar size distributed alloy can be concluded that firstly, the coarse lamellar O formed during solution process makes the alloy owns good elongation and secondly, the fine lamellar O precipitate during the aging process strengthens the alloy.
A high dimensionless figure of merit (ZT) of 1.36 at 400 K is obtained in Bi0.4Sb1.6Te3 after hot deformation, and also the average ZT is ∼1.2 in the temperature range of 300 525 K, which makes the alloy suitable for low temperature power generation.
