Titanium and aluminum based alloy powder material for additive manufacturing and preparation method thereof

A powder material and additive manufacturing technology, which is applied in the field of titanium-aluminum-based alloy powder materials for additive manufacturing and its preparation, can solve the problems of prolonging the supply cycle, raising the price of powder raw materials, and restricting the development of the additive manufacturing industry. Achieve improved oxidation resistance, high strength and ductility

Active Publication Date: 2017-11-28
NORTHWEST INSTITUTE FOR NON-FERROUS METAL RESEARCH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, none of the above patents has an alloy system designed for the additive manufacturing process. They are all original casting or forging component systems. Powder system and preparation method of
Foreign countries strictly protect and keep secret the spherical powder for additive manufacturing aero-engine including spherical titanium alloy powder, its compo

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  • Titanium and aluminum based alloy powder material for additive manufacturing and preparation method thereof
  • Titanium and aluminum based alloy powder material for additive manufacturing and preparation method thereof
  • Titanium and aluminum based alloy powder material for additive manufacturing and preparation method thereof

Examples

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Example Embodiment

[0030] Example 1

[0031] The titanium-aluminum-based alloy powder material for additive manufacturing in this example is made of the following atomic percentages of raw materials: Al47%, Cr 2.3%, Mo 2.0%, TiB 2 1.0%, the balance is Ti and inevitable impurities.

[0032] The method for preparing the titanium-aluminum-based alloy powder material in this embodiment includes the following steps:

[0033] Step 1: Use a ceramic guide core to protect the inner wall of the graphite guide tube in the vacuum induction smelting gas atomization equipment. The specific process is: design and make a mold according to the shape and size of the graphite guide tube. The ceramic powder is added into the mold to be pressed and formed, and after sintering, a ceramic guide core suitable for the graphite guide tube is obtained, and then the ceramic guide core is nested inside the graphite guide tube; the The first ceramic powder is ZrO 2 powder;

[0034] Step 2: Mix the second ceramic powder ...

Example Embodiment

[0039] Example 2

[0040] The titanium-aluminum-based alloy powder material for additive manufacturing in this embodiment is made of the following atomic percentages of raw materials: Al56%, Cr 1.6%, Mo 1.6%, TiB 2 1.2%, the balance is Ti and inevitable impurities.

[0041] The method for preparing the titanium-aluminum-based alloy powder material in this embodiment includes the following steps:

[0042] Step 1: Use a ceramic guide core to protect the inner wall of the graphite guide tube in the vacuum induction smelting gas atomization equipment. The specific process is: design and make a mold according to the shape and size of the graphite guide tube. The ceramic powder is added into the mold to be pressed and formed, and after sintering, a ceramic guide core suitable for the graphite guide tube is obtained, and then the ceramic guide core is nested inside the graphite guide tube; the The first ceramic powder is Y 2 O 3 powder;

[0043] Step 2: Mix the second ceramic p...

Example Embodiment

[0048] Example 3

[0049]The titanium-aluminum-based alloy powder material for additive manufacturing in this example is made of the following atomic percentages of raw materials: Al50%, Cr 2.0%, Mo 2.0%, TiB 2 0.8%, the balance is Ti and inevitable impurities.

[0050] The method for preparing the titanium-aluminum-based alloy powder material in this embodiment includes the following steps:

[0051] Step 1: Use a ceramic guide core to protect the inner wall of the graphite guide tube in the vacuum induction smelting gas atomization equipment. The specific process is: design and make a mold according to the shape and size of the graphite guide tube. The ceramic powder is added into the mold to be pressed and formed, and after sintering, a ceramic guide core suitable for the graphite guide tube is obtained, and then the ceramic guide core is nested inside the graphite guide tube; the The first ceramic powder is Y 2 O 3 powder;

[0052] Step 2: Mix the second ceramic powde...

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Abstract

The invention provides a titanium and aluminum based alloy powder material for additive manufacturing. The titanium and aluminum based alloy powder material is prepared from the following raw materials in percentage by atom: 47 to 56 percent of Al, 1.6 to 2.3 percent of Cr, 1.6 to 2.0 percent of Mo, 0.6 to 1.2 percent of TiB2 and the balance of Ti and unavoidable impurity. In addition, the invention also provides a method for preparing the alloy powder material. The method comprises the following steps of I, protecting the inner wall of a graphite flow guiding pipe by adopting a ceramic flow guiding inner core; II, preparing high-temperature-preventing carbonized coatings at the end surfaces of the graphite flow guiding pipe and then loading the graphite flow guiding pipe into a smelting chamber; III, preparing an ingot blank by adopting vacuum self-consuming arc smelting; IV, smelting to prepare an alloy melt by adopting a water-cooled copper crucible; V, carrying out atomization treatment, so that the titanium and aluminum based alloy powder material for the additive manufacturing is obtained. The alloy powder material is an alloy system designed for the additive manufacturing process and various properties of a product manufactured through the additive manufacturing technique by adopting the alloy powder material can reach expected effects.

Description

technical field [0001] The invention belongs to the technical field of additive manufacturing and powder metallurgy, and in particular relates to a titanium-aluminum-based alloy powder material for additive manufacturing and a preparation method thereof. Background technique [0002] The development of the aerospace and automobile industries has put forward more stringent requirements on the performance of key parts such as engine blades and turbochargers. Intermetallic compound materials represented by TiAl-based alloys have both metallic bonds and covalent bonds. It has the toughness of metal materials and the high-temperature performance of ceramics. It has low density, excellent oxidation resistance, and good high-temperature specific strength. It has become the most promising new generation of high-temperature structural materials. However, due to the long-range ordered structure and crystal structure of TiAl intermetallic compounds, their room temperature plasticity an...

Claims

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Application Information

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IPC IPC(8): C22C14/00C22C1/03B22F9/08B33Y70/00
CPCB22F9/082B22F2009/0844B33Y70/00C22C1/03C22C14/00
Inventor 李增峰陈刚谈萍汤慧萍葛渊赵少阳沈垒殷京瓯文佳艺王建石英
Owner NORTHWEST INSTITUTE FOR NON-FERROUS METAL RESEARCH
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