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Iron-nickel-based high-temperature alloy

A high-temperature alloy, iron-nickel-based technology, applied in the field of high-temperature alloy steel, can solve problems such as increased raw material cost, achieve the effects of improving the stability of material structure and performance, good stability of material structure and performance, and inhibiting coarsening and merging

Inactive Publication Date: 2016-12-21
HUANENG POWER INTERNATIONAL +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the addition of niobium will lead to a sharp increase in the cost of raw materials, so it is necessary to reasonably control the ratio of its addition while improving the properties of gold.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] The iron-nickel-based superalloy of this embodiment comprises: C: 0.75%, Cr: 28%, Ni: 48%, Co: 3.0%, Mn: 0.3%, Si: 0.2%, Nb: 2.0%, W: 5.0%, Ti: 0.1%, Al: 0.2%, and the balance is Fe.

[0029] The preparation method of the present embodiment comprises the following steps:

[0030] 1) Raw material preparation: The ingredients include by mass percentage: C: 0.75%, Cr: 28%, Ni: 48%, Co: 3.0%, Mn: 0.3%, Si: 0.2%, Nb: 2.0%, W: 5.0% , Ti: 0.1%, Al: 0.2%, and the balance is Fe.

[0031] 2) Smelting step: using an intermediate frequency vacuum induction arc furnace to melt the prepared alloy into an alloy mother liquor, controlling the mass percentage content of P and S impurity elements in the mother liquor to be -3 Then start alloy melting;

Embodiment 2

[0033] The iron-nickel-based superalloy of this embodiment comprises: C: 0.9%, Cr: 25%, Ni: 48%, Co: 3.0%, Mn: 0.2%, Si: 0.2%, Nb: 1.0%, W: 5.0%, Ti: 1.0%, Al: 0.1%, and the balance is Fe.

[0034] The preparation method of the present embodiment comprises the following steps:

[0035] 1) Raw material preparation: The ingredients include by mass percentage: C: 0.9%, Cr: 25%, Ni: 48%, Co: 3.0%, Mn: 0.2%, Si: 0.2%, Nb: 1.0%, W: 5.0% , Ti: 1.0%, Al: 0.1%, and the balance is Fe.

[0036] 2) Smelting: using an intermediate frequency vacuum induction arc furnace to melt the prepared alloy into an alloy mother liquor, controlling the mass percentage content of P and S impurity elements in the mother liquor to be -3 Then start alloy melting;

Embodiment 3

[0038]The iron-nickel-based superalloy of this embodiment comprises: C: 0.8%, Cr: 28%, Ni: 48%, Co: 3.0%, Mn: 0.3%, Si: 0.2%, Nb: 1.5%, W: 5.0%, Ti: 0.5%, Al: 3.0%, and the balance is Fe.

[0039] The preparation method of the present embodiment comprises the following steps:

[0040] 1) Raw material preparation: The ingredients include by mass percentage: C: 0.8%, Cr: 28%, Ni: 48%, Co: 3.0%, Mn: 0.3%, Si: 0.2%, Nb: 1.5%, W: 5.0% , Ti: 0.5%, Al: 3.0%, and the balance is Fe.

[0041] 2) Smelting: using an intermediate frequency vacuum induction arc furnace to melt the prepared alloy into an alloy mother liquor, controlling the mass percentage content of P and S impurity elements in the mother liquor to be -3 Afterwards alloy smelting begins.

[0042] 3) Heat treatment: 1200°C / 1.0h solution treatment for the alloy: after heating up from room temperature to 700°C at a speed of 50°C / min, then heating up to 1000°C at a speed of 10°C / min and keeping it warm for 1.0 hour, and final...

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Abstract

The invention discloses iron-nickel-based high-temperature alloy which is resistant to glass corrosion. The alloy comprises components which satisfies the following range requirement in percentage by mass: 0.7% to 1.0% of C, 24% to 30% of Cr, 48% to 55% of Ni, 0.5% to 3.5% of Co, smaller than or equal to 0.5% of Mn, smaller than or equal to 0.5% of Si, 0.5% to 2.5% of Nb, smaller than or equal to 2.5% of Mo, 5% to 10% of W, 0.1% to 1.2% of Ti, 0.1% to 3.5% of Al and the balance Fe. The alloy can be used in an as-cast condition or in a solid solution state; the compressive yield strength of the alloy at 1000 DEG C and 1100 DEG C is respectively higher than 100MPa and 60MPa; the 500-hour deformation degree of the alloy under a 1050DEG C / 25MPa compression creep condition is not higher than 1.5%; the 180-hour deformation degree of the alloy under a 1050DEG C / 35MPa compression creep condition is not higher than 5.0%.

Description

technical field [0001] The invention belongs to the field of alloy steel for high temperature, and relates to an iron-nickel-based high-temperature alloy with good glass corrosion resistance, which has high strength above 1000°C and is suitable for high-performance centrifuges. Background technique [0002] Glass wool has excellent characteristics such as low density, low heat transfer coefficient, corrosion resistance, high temperature resistance, and good chemical stability, and has been widely used in various industries of production and life. The production of glass wool by centrifugal blowing method has the characteristics of high efficiency and low energy consumption, so it has become the mainstream process for producing glass wool. In this process, the mineral melt such as glass passes through the hole wall of the forming chamber (centrifuge) that can rotate at high speed to produce filaments. Due to the centrifugal action of the rotating centrifuge, the filaments are...

Claims

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Application Information

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IPC IPC(8): C22C19/05C22C30/00
CPCC22C19/055C22C30/00
Inventor 严靖博谷月峰袁勇鲁金涛杨珍周永莉黄锦阳杨征张醒兴
Owner HUANENG POWER INTERNATIONAL
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