Disadvantages Of Titanium

Titanium (Ti) has been widely used in many fields such as aerospace, automotive, engineering and medical. The main properties of Ti are high strength, low density, and excellent corrosion resistance influence their value. These properties make them very attractive for a variety of applications. Ti alloys provide structural materials in the aeronautics and astronautics industries because of their high specific strength but they are expensive. Stainless steel is a widely used and it is an inexpensive material in most industrial fields. Dissimilar joints can provide cost savings due to less use of one of the components. They also are capable of offering complex function in engineering applications. Therefore, there are urgent needs to join Ti

The process is used with shielding gas and without the application of pressure. The shielding gas that usually used were argon and helium. The process may be used with or without the addition of filler metal. GTAW has become indispensable as a tool for many industries because of the high-quality welds produced and low equipment costs. The GTAW process can be used to weld steel, stainless steel, Al, Mg, Cu, Ni, Ti, and others. The primary variables in GTAW are arc voltage (arc length), welding current, travel speed, and shielding gas. The amount of energy produced by the arc is proportional to the current and voltage. The amount transferred per unit length of weld is inversely proportional to the travel speed. The arc in helium (He) is more penetrating than that in argon (Ar). However, because all of these variables interact strongly, it is impossible to treat them as truly independent variables when establishing welding procedures for fabricating specific

The sample must represent the whole material and compatible with the sample holder of the equipment used. These factors must be considered while preparing samples for the analysis. Each sample was cut with its surface being in the same plane with the sample holder. The holder must be placed into the XRD equipment (Rigoku Ultima IV) very carefully. The samples were analyzed in terms of the phases presented by the XRD. This will verify whether the different element composition temperature can affect the structure and phase transitions. In this study, the sample for XRD was take from welded part. The samples for XRD were cut according to the size of the sample holder where the samples were placed. The structure of the samples were detected and captured by a detector using copper (Cu Kα) as radiation source at a diffraction angle ranging between 20-90° in 2θ. The scanning rate was 2°/min. Copper (Cu Kα) is the most common radiation used in XRD