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What type of titanium alloy is used for aero-engines, and what materials and types are used for important parts with high temperature resistance? Processing technical difficulty? Are the materials eas
What type of titanium alloy is used for aero-engines, and what materials and types are used for important parts with high temperature resistance? Processing technical difficulty? Are the materials easy to buy at present? I. Overview

Inconel 60 1 is a nickel-chromium solid solution nickel-based alloy, which has good high-temperature performance and oxidation resistance. It has many uses in aerospace and industry and is one of the outstanding alloys.

diversification

Covered electrode of various materials and sizes.

Heat treatment system

Solution treatment: 1 150℃, 1-2 hours, water quenching or rapid air cooling. After 20% cold working, the alloy can be heated at 885℃ for 30 minutes to recrystallize.

chemical composition

Table 1 chemical composition,%

physicochemical property

1. Specific gravity: 8.05g/cm3.

2. Melting temperature:1300-1368℃

3. Thermal conductivity (Table 2)

Table 2 Thermal conductivity of alloy

7. Oxidation resistance and corrosion resistance

The alloy has good high-temperature oxidation resistance. The cyclic oxidation test at room temperature-1095℃ (heating at 1095℃ 15 minutes, cooling at room temperature for 5 minutes) proved that the alloy was slightly oxidized, with little weight loss and no peeling, even exceeding Inconel 702 alloy with outstanding oxidation resistance.

mechanical properties

1. Mechanical properties at room temperature

Tensile property

Table 6 Typical tensile properties at room temperature

Impact performance

Charpy (V-notch)17.97 kg m.

2. Durability

Table 7 Durability

craftsmanship

Alloys are easy to cold-work and hot-work. This process is similar to austenitic stainless steel. The initial forging temperature is 1205℃, and the final forging temperature is 980℃ for large forgings and 870℃ for small forgings. The alloy has good weldability. Inert gas metal welding and inert gas tungsten welding can be used. Using alloy or alloy with similar composition as filler, the filler metal should ensure that the weld has the same oxidation resistance as the matrix. If the alloy slowly passes through the temperature range of 540-760℃ during heating or cooling, carbides are easy to precipitate, which is unfavorable to the performance of the alloy. In order to avoid carbide precipitation, it must be cooled quickly after solution treatment.

use

Used as aerospace structural materials, jet engine parts, thermocouple protection tubes, muffle furnaces, burner partitions, heat treatment baskets and fixtures, radiation furnace tubes, etc.