Unlock instant, AI-driven research and patent intelligence for your innovation.

Nickel-based alloy high-temperature aging treatment test method

A nickel-based alloy, high-temperature aging technology, applied in the direction of thermal expansion coefficient of materials, can solve the problems of large temperature fluctuation, affecting test accuracy and efficiency, and achieve the effect of small temperature fluctuation, convenient operation, and increased accuracy and efficiency

Inactive Publication Date: 2019-12-20
CHENGDU ADVANCED METAL MATERIALS IND TECH RES INST CO LTD
View PDF1 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the test of high-temperature aging treatment of nickel-based alloys is carried out in ordinary heat treatment furnaces or test furnaces. Under the condition of long-term heat preservation at 700-900 °C, the temperature fluctuation is usually about ±5 °C, and the temperature fluctuation is large, which seriously affects the test. accuracy and efficiency

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0017] The test method for high-temperature aging treatment of nickel-based alloys of the present invention, the nickel-based alloy is GH3128 nickel-based alloy, in terms of mass percentage, the chemical composition of GH3128 nickel-based alloy is: carbon ≤ 0.05%, iron ≤ 0.2%, silicon ≤ 0.80 %, Manganese≤0.50%, Phosphorus≤0.013%, Sulfur≤0.013%, Chromium 19.0%~22.0%, Tungsten 7.5%~9.0%, Molybdenum 7.5%~9.0%, Aluminum 0.40%~0.80%, Titanium 0.40%~0.80% %, the rest are nickel and impurities, including the following steps:

[0018] a. Processing samples;

[0019] b. Put the sample into the test tube cavity of the thermal dilatometer, and the temperature control range of the thermal dilatometer is 0-1600°C.

[0020] c. When the thermal dilatometer is working, heat the temperature in the test tube cavity to 700-900°C, and then keep it warm for 100-300 hours. During the heat preservation, the temperature fluctuation is controlled within ±0.5°C;

[0021] d. After the sample cools dow...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention relates to the technical field of alloy high-temperature aging treatment tests, in particular to a nickel-based alloy high-temperature aging treatment test method. The nickel-based alloyhigh-temperature aging treatment test method comprises the following steps that a, a sample is machined; b, the sample is placed in a testing pipe cavity of a thermal dilatometer, and the temperatureof the thermal dilatometer is controlled to range from 0 DEG C to 1,600 DEG C; c, the thermal dilatometer works, the temperature in the testing pipe cavity is increased to 700-900 DEG C through heating, then, heat preservation is conducted for 100-300 h, and when heat preservation is conducted, temperature fluctuation is controlled within + / -0.5 DEG C; and d, after the sample is cooled to 200 DEGC, the sample is taken out, and metallographic structure detecting and analyzing are conducted. During test heat preservation, temperature fluctuation can be controlled within + / -0.5 DEG C, temperature fluctuation is little, the temperature is accurately controlled, and the test accuracy and efficiency are obviously improved; and the thermal dilatometer is convenient to operate, the running costis low, and popularization is facilitated.

Description

technical field [0001] The invention relates to the technical field of high-temperature aging treatment tests for alloys, in particular to a test method for high-temperature aging treatment of nickel-based alloys. Background technique [0002] GH3128 nickel-based alloy, with high plasticity, high durable creep strength, good oxidation resistance and stamping, welding and other properties, is suitable for aero-engine combustion chamber flame tubes, heating combustion chamber shells, and adjustments that work at 950 ° C for a long time chips and other high temperature components. Before use, nickel-based alloys need to be aged at 700-900°C for 100-300 hours to observe the changes in their microstructure and precipitates to ensure that the performance of nickel-based alloys meets the requirements for use. At present, the test of high-temperature aging treatment of nickel-based alloys is carried out in ordinary heat treatment furnaces or test furnaces. Under the condition of lo...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): C22F1/10C22C19/05G01N25/16
CPCC22C19/055C22C19/056C22F1/10G01N25/16
Inventor 刘宁张军赵中清
Owner CHENGDU ADVANCED METAL MATERIALS IND TECH RES INST CO LTD