Selectivity alloys

Additions of selected alloying elements raise the recrystaUization temperature, extending to higher temperature regimes the tensile properties of the cold-worked molybdenum metal. The simultaneous additions of 0.5% titanium and 0.1% zirconium produce the TZM aUoy, which has a corresponding... 

The inherent solderabiUties of selected alloys are Hsted in Table 9. Class IV and V ratings with this particular flux indicate the presence of oxides or other surface contaminants that may be removable with more aggressive flux or acid pickling. 

In addition to the possibiUty of selecting alloys having minimum SCC susceptibiUty while retaining other properties as needed, there are other steps possible to reduce the SCC probabiUty (/) avoid designs that permit water to accumulate (2) avoid conditions in which salts, especially chlorides, can concentrate and (i) where available and otherwise acceptable, use a clad alloy (2) (see Metal surface treatments). 

For the Cu-Mg alloy system, as an example, the phase diagram is shown in Fig. 2.40 together with the corresponding T/AT graphs obtained from the thermal analysis of two selected alloys. 

Alloy crystal and thermal data symbols. A number of tables show, for selected alloys, the highest melting points observed in the systems considered, as well as the mechanism of formation (p = peritectic melting, syn = synthetic reaction, s.s.r. = solid-state reaction, est. = estimated melting point, etc.), the value of the Raynor Index (<1, =1 or>l). The question mark means that no reliable data are available. 

Notes on the crystal chemistry of selected alloys and compounds of the 15th group elements. Among the pnictides, several series of numerous isostructural compounds are found. The 1 1 compounds with Sc, Y, lanthanides and actinides, having the NaCl-type structure, generally correspond to very stable phases, strongly... 

Summary of some general assessments concerning the chemical behaviour at room temperature of ABS and PC, which are not necessarily representative of ABS/PC alloys or of all grades of ABS and PC. These general indications should be verified by consultation with the producer of the selected alloys and by tests under operating conditions. 

Table 5.4 Properties of Selected Alloys Exhibiting Superplasticity...

T. A. Danielson, Corrosion of Selected Alloys in Sub-and Supercritical Water Oxidation Environments, Thesis, University of Texas USA, (1995). 

Kane, R.D. and R.G. Taraborclli Selecting Alloys to Resist Heat and Corrosion, Advanced Materials Processes, 22 (April, 1993). 

Second quadrant of B-H curves for selected alloys. From R. M. Rose, L.A. Shepard, and J. Wulff, The Structure and Properties of Materials, vol. IV, Electronic Properties (New York Wiley, 1996). Reprinted with permission of John Wiley Sons, Inc. 

Polyurethanes provide a large package of chemical resistance to metals within the operating temperature of the polymer. By careful selection, alloys can be used to provide the desired chemical resistance, but normally at a cost disadvantage. 

Hence the selected alloy corresponds to the formula Ce7.5La9.3Ni83 or Ai6.8B83 i.e.— AB4.94. This suggests that the chemical composition of the alloy used in the hydrogen storage/compressor deviated of the stoichiometric composition of the AB5 alloy to the depletion in nickel. 

One of the selected alloys in the three-phase region has been found to be (LaNi5) + (CeNi5)+(La2Ni7) ... 

Some salient features of SCC of some selected alloys with respect to susceptibility to SCC are given below 60... 

At a selected alloy temperature the vapor pressure of cadmium is determined as a function of alloy composition the cerium solvent has a negligible vapor pressure. The alloy, located in one leg of a sealed inverted U-tube, is subjected to various specific pressures of cadmium from a supply of pure cadmium at selected temperatures in the second leg of the tube. The U-tube is freely suspended at its midpoint and connected to a balance, so that the transfer of cadmium from one leg of the tube to the other can be measured. This gives information as to the change in alloy composition and phase equilibrium. 

FIGURE 4.9 Corrosion rate of selected alloys as a function of exposure time. 

Palladium and selective alloys with other metals can be fabricated into dense membrane reactors in foil or tubular form, mostly in thin layers to reduce permeation resistance. In... 

Table 1. Mechanical properties of deformed selected alloys, a and (3 marks mean that deformation was finished in a or [3 regions. ...

The compositions of as-cast Ti-3Al-XSi-XZr alloys studied, and the phases present according to X-ray diffraction are given in Table 1. Microstructures of selected alloys are shown in Fig. 1. 

The Fe-Cr-C Equilibrium Relationships in Stainless Steels. The metallurgical processes occurring in austenitic stainless steels causing susceptibility to intergranular corrosion (sensitization) and methods to either prevent or remove susceptibility, are illustrated by the physical metallurgy of the selected alloys in Table 7.5. These are all austenitic stainless steels, and after quenching from elevated temperatures are es-... 

Thermodynamic data of selected hydrides showing equilibrium pressure at 25 °C, and equilibrium temperature at 1 atm pressure are shown in Table 12.3 using the data of Sandrock [17]. Some selected alloys/intermetallics are shown that have favorable thermodynamic properties for practical application these properties of the alloys/intermetallics are listed in Table... 

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