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ZK61M magnesium alloy for aerospace

A ZK61M, aerospace technology, applied in the field of alloy manufacturing, can solve the problems that the non-proportional strength is difficult to achieve, and the tensile strength of high-directional performance is difficult to achieve, so as to achieve the effect of ensuring three-dimensional performance

Active Publication Date: 2019-04-23
洛阳迈格镁业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, no matter what standard, the material does not require high-directional performance, but the aerospace board requires three-dimensional performance of the material, and each direction exceeds the standard.
The tensile strength of ZK61M's high-directional performance is difficult to reach 220N / mm 2 , it is stipulated that the non-proportional strength strength is difficult to reach 120N / mm 2 ; To this end, it is necessary to develop a new ZK61M magnesium alloy to achieve the material performance of aerospace applications and fill the gap in the industry

Method used

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  • ZK61M magnesium alloy for aerospace
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  • ZK61M magnesium alloy for aerospace

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] A kind of ZK61M magnesium alloy for aerospace, it is prepared through the following steps:

[0020] (1) Forging: Heating and forging the ZK61M round ingot conforming to the YS / T 627-2013 wrought magnesium and magnesium alloy round ingot standard, the heating temperature is 420-430°C, and the heating time is 13-16 hours. Forging in the three directions of length, width and height, the final forging temperature is not less than 350°C to obtain a forged plate; the forging ratio of 10-20 is preferably used for forging in the three directions of length, width and height. An optional ZK61M round ingot size is Φ300-500mm in diameter and 600-700mm in length. When forging, the round ingot with a length of 600-700mm is first forged to 300-400mm, and then forged into a rectangle, and then the length is , width, and height are forged in three directions, and finally forged into a forged plate with a thickness of 150-155mm;

[0021] (2) Hot rolling: heat the forged plate obtained i...

Embodiment 2

[0025] A kind of ZK61M magnesium alloy for aerospace, it is prepared through the following steps:

[0026] (1) Forging: The ZK61M round ingot conforming to the YS / T 627-2013 wrought magnesium and magnesium alloy round ingot standard is heated and forged. The size of the round ingot is Φ450mm in diameter, 700mm in length, and the heating temperature is 420°C. The heating time is 16 hours. When forging, the round ingot with a length of 700mm is first forged to 400mm, and then forged into a rectangle, and then forged with a forging ratio of 15 in the three directions of length, width and height. The final forging temperature is 350 ℃, and finally forged into a 150mm thick forged plate; samples were taken from the 150mm thick plate, and the mechanical properties at room temperature are shown in Table 2 (three test data).

[0027]

[0028] It can be seen from Table 2 that the tensile strength and non-proportional strength of the magnesium alloy after forging do not meet the requ...

Embodiment 3

[0038] A kind of ZK61M magnesium alloy for aerospace, it is prepared through the following steps:

[0039](1) Forging: The ZK61M round ingot that meets the YS / T 627-2013 deformed magnesium and magnesium alloy round ingot standard is heated and forged. The size of the round ingot is Φ300mm in diameter and 650mm in length. The time is 14 hours. When forging, the round ingot with a length of 650mm is first forged to 300mm, and then the circle is forged into a rectangle, and then forged with a forging ratio of 11 in the three directions of length, width, and height. The final forging temperature is 350 ℃, and finally forged into a forged plate with a thickness of 150 mm;

[0040] (2) Hot rolling: heat the forged plate obtained in step (1) at 400°C for 7 hours, and then turn to roll. First, longitudinally roll the 150mm thick forged plate into a plate with a thickness of 138mm, and then turn it into a plate with a thickness of 127mm. Then turn to longitudinal rolling to be a plate...

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Abstract

The invention discloses a ZK61M magnesium alloy for aerospace. The ZK61M magnesium alloy for aerospace is prepared by the following steps of (1) performing forging. specifically, a ZK61M round ingot conforming to the standard of a YS / T 627-2013 wrought magnesium and magnesium alloy round ingot is heated and forged, and is subjected to the forging in the three directions of length, width and height; (2) performing hot rolling, specifically, a forged sheet obtained in the step (1) is subjected to steer rolling, and then to the small machining rate multi-pass rolling at a temperature of 345-355 DEG C, so that a hot-rolled sheet with a total power of 26-27% is finally obtained; and (3) performing aging. specifically, the hot-rolled sheet obtained in the step (2) is subjected to aging treatmentat 170-180 DEG C for 22-26 hours to obtain the ZK61M magnesium alloy for aerospace. According to the ZK61M magnesium alloy for aerospace obtained by forging, hot rolling and aging treatment, the magnesium alloy three-way performance exceeds the requirement for aerospace materials, and the ZK61M magnesium alloy can be well applied to the aerospace military industry.

Description

technical field [0001] The invention belongs to the technical field of alloy manufacture, and in particular relates to a ZK61M magnesium alloy for aerospace. Background technique [0002] Magnesium alloy is the metal with the smallest specific gravity among light metals, and this material is especially suitable for aerospace applications. However, because the thermal processing temperature range of ZK61M material is narrow, only about 50 degrees, it is difficult to complete hot rolling within this range, so it is impossible to produce plates. At present, there is no standard for plates in China, only forgings are produced (currently ZK61M magnesium alloy Only forging standards), but the performance of forging standards cannot meet the material properties of aerospace applications. The ZK61M forging standards and aerospace standards are shown in Table 1. [0003] [0004] Note: H112 in the table is the natural cooling state, the national forging standard is in the bracke...

Claims

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Application Information

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IPC IPC(8): C22F1/06
CPCC22F1/06
Inventor 李跃华高双玲阚保光
Owner 洛阳迈格镁业有限公司
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