What Are The Properties Of TZM At High Temperatures?

What are the properties of TZM at high temperatures?Titanium Zirconium Molybdenum (TZM) is a molybdenum-based alloy designed to achieve high strength at high temperatures.

It has a low coefficient of thermal expansion, high thermal and electrical conductivity, and excellent thermal shock resistance.

TZM B387 Type 364 contains nominally 0.4–0.55 wt% titanium (Ti), 0.06–0.12 wt% zirconium (Zr), 0.01–0.04 wt% carbon (C), and the balance molybdenum (Mo). Due to precipitation strengthening through the formation of Ti and Zr carbides, TZM exhibits higher strength and creep resistance at high temperatures than unalloyed Mo.

Although TZM exhibits excellent resistance to corrosion from molten metals and electrochemical processes, it oxidizes at temperatures above 400 °C to form volatile molybdenum oxides. In recent years, many studies have been conducted to improve the oxidation resistance of TZM mainly by adding coatings on the exposed surfaces.

Currently, TZM is used in high-temperature applications in the nuclear, aerospace, and electronic industries due to its suitable mechanical properties under these conditions.

Recently, the application of TZM as a pressure-retaining material for supercritical ammonia pressure vessels with temperatures up to 900°C and pressures up to 100MPa was demonstrated for the first time.