SU173418A1 - - Google Patents

Description

Known heat-resistant deformable alloy based on Nickel, containing (in / o):

Chrome .... 17-20

Molybdenum . .4-5

Tungsten. . .4-5

Titan .... 2.2-2.8

Aluminum .... 0.7-1.7

Carbon ...., 08

Sulfur. . ., 01

Phosphorus .... 0.015

Manganese ...- 0.5.

Silicon ...- About 6

Boron 0.01

Cerium .... 0.01

Mechanical properties of the alloy at room temperature: 0 100-PO kg / mm; one hundred, 2- 55-75 kg / mm; 6 20-ZOO / s.

The peculiarity of the described alloy is that it increases the content of molybdenum and slightly changes the ratio of components, namely (in o / o):

17-20 8-12 0-6 2-3 1-2 6

0.1

0.01

0.015

0.5

0.6

0.01

0.02

A more optimal componenton ratio makes it possible to increase the mechanical properties and improve the weldability of the alloy.

The mechanical properties of the alloy at room temperature after heat treatment when heated to 1175 ° C and held for 5 hours, then cooled in air to + 850 ° C and held for 15 hours, and further cooled in air, are as follows:

CE 105-110 kg / mm; AO2 75-82 kg / mm; 6 12-: 14o / o; d1) 12-160 / 0.

The yield strength of the alloy in the temperature range of 20–950 ° is 10–15 kg / mm above the yield strength of the known alloy.

The alloy can be used in short-term welded products operating at 750-900 ° C, as well as for parts of gas turbines operating for a long time at 700-800 ° C.

Subject invention

Heat resistant wrought nickel-based alloy containing chromium, molybdenum, tungsten, titanium, aluminum, Iron, carbon, Sulfur, phosphorus, (manganese, silicon, i6oip: and cerium, in order to improve the mechanical properties and improve weldability, it has the following chemical composition (in o / o):

Chrome17-20

Molybdenum ... 8-12

0-6

2-3

,

1-2

0.1 0.01

0.015

0.5 0.6

. 0.01

. 0.02