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

Heat-resistant corrosion resistant iron base alloy manufacturing method and product made by it

An iron-based alloy and manufacturing method technology, applied in the field of metal materials, can solve problems such as low tensile plasticity, poor high-temperature strength, corrosion resistance and oxidation resistance, intergranular and transgranular fracture, etc., and achieve comprehensive high-temperature strength performance, the effect of excellent antioxidant performance

Inactive Publication Date: 2006-04-12
林晖 +1
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But Fe 3 Al is very brittle, and its tensile plasticity at room temperature is also low, and intergranular and transgranular fractures are more likely to occur
Although in Fe 3 Adding chromium to Al limitedly improves its tensile plasticity, and the specific gravity is also lighter, and its density is as high as 6.5g / cm 3 , but the commonly used ordered Fe-Al-Cr composition has poor high temperature strength, corrosion resistance and oxidation resistance

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

[0024] As shown in Figure 1, the phase area of ​​BCC is shown, and the following examples are further provided in conjunction with the accompanying drawings:

[0025] An article made by conventional melting techniques with a composition within the range shown in Figure 1. The raw material formulated according to this composition is made into an alloy melt under vacuum, and poured into a cavity mold shell with an object shape, and solidified under vacuum. The solidified casting is continued to cool to room temperature in the sandbox and in air to form an as-cast object. The as-cast article was then removed from the formwork and found to be a body-centered cubic solid solution of Fe-Al-Cr-C with a specific gravity of 6.1 g / cm 3 . The mechanical properties of the as-cast objects are listed in Table 1, the oxidation resistance is listed in Table 2, and the corrosion resistance is listed in Table 3. As shown in Table 1, the material of the present invention has excellent yield s...

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

PropertyMeasurementUnit
thicknessaaaaaaaaaa
densityaaaaaaaaaa
Login to View More

Abstract

The present invention belongs to the field of metal material, and the heat-resistant and corrosion resistant iron base alloy has weight loss rate in 20-65 % concentration nitric acid solution lower than 0.01 mm / year. The alloy is cubic centered Fe-Al-Cr-C solid solution, and consists of: Fe 10-80 atom%, Al 10-45 atom%, Cr 1-70 atom% and C 0.9-15 atom%; or Fe 12.3-87.0 wt%, Al 5.3-29.0 wt%, Cr 1.2-78.3 wt% and C 0.2-3.9 wt%. The alloy has lower cost compared with Fe-Ni alloy, and lower cost and lighter weight compared with stainless steel, heat resisting steel and heat resisting alloy. It is especially suitable for supercharger turbine.

Description

[0001] The present invention is by the patent application number: 001095617, the patent application name is: "iron-based heat-resistant alloy", the patent applicant is: Lin Hui, and the patent application date is: July 4, 2000 patent divisional application. technical field [0002] The invention relates to a method for manufacturing an iron-based alloy and a product thereof, in particular to a method for manufacturing a heat-resistant and corrosion-resistant iron-based alloy and a product thereof, belonging to the field of metal materials. Background technique [0003] At present, the most commonly used materials for heat-resistant structures are the above-mentioned nickel-containing heat-resistant steels, heat-resistant alloys and high-temperature alloys. However, due to the relatively high specific gravity of such heat-resistant steels, heat-resistant alloys and high-temperature alloys, people seek a heat-resistant material with a lower specific gravity. The ceramics and o...

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
Patent Type & Authority Patents(China)
IPC IPC(8): C22C27/06C22C38/18C22C38/36
Inventor 林晖
Owner 林晖