A method and system for preparing multi-scale precipitated nano-heterogeneous magnesium alloy sheets
A magnesium alloy, multi-scale technology, applied in the direction of manufacturing tools, metal rolling, metal rolling, etc., can solve the problems of difficult interface oxidation control, affecting product quality, low production efficiency, etc., and achieve large microstructure design directionality and flexibility, reduce control difficulty, and improve efficiency
Active Publication Date: 2021-07-13
NANJING UNIV OF SCI & TECH
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Problems solved by technology
Its limitations are: (1) the stacked rolling process needs to cut the material multiple times, the process is complicated, and the production efficiency is low; (2) the multiple stacked rolling process makes it difficult to control the interface oxidation inclusions, which affects the product quality
Method used
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Embodiment 1
[0047] In the following, the present invention will be further described in detail in conjunction with the embodiments. This embodiment is implemented on the premise of the technical solution of the present invention, and provides detailed implementation methods and operating procedures.
[0048] (1) Choose a length of 0.6m, a width of 0.4m, a Mg-3Y magnesium alloy plate 3 of 3mm and a Mg-10Y magnesium alloy plate 4 of the same size, and polish the surface of the selected magnesium alloy plate and cleaning to remove surface oil and scale, and stack the Mg-3Y magnesium alloy plate 3 on top of the Mg-10Y magnesium alloy plate 4.
[0049] (2) Set the speed of the upper and lower rolls of the three-roll asynchronous rolling mill 1, the speed of the upper roll 2 is 6rpm, and the lower roll is 12rpm, and the two stacked plates are rolled into bars by the three-roll asynchronous rolling mill. The left end of the upper roll 2 stretches out from the part of the three-high rolling mill,...
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The invention belongs to the field of material preparation, and in particular relates to a method for preparing multi-scale precipitated nano-heterogeneous magnesium alloy plates. It includes the following steps: roll pressing: several magnesium alloy plates with two or more aging precipitation behaviors are alternately stacked and rolled into bars; roll pressing: roll pressing the bars to make multi-layer heterogeneous magnesium Alloy thick plate billet; hot rolling: through hot rolling to refine the layer thickness and increase the interfacial bonding degree to make multi-layer heterogeneous magnesium alloy sheet; multi-scale precipitation: control the multi-layer in heterogeneous magnesium alloy sheet Scale precipitation to obtain multi-scale precipitation-strengthened nano-heterogeneous magnesium alloy sheets. The invention adopts double-alloy or multi-alloy roll-press hot-rolling method to prepare heterogeneous magnesium alloy plate, which has great directionality and flexibility in microstructure design; and the prepared alloy has both toughness and strength of soft phase and hard phase, A high-strength and high-toughness dual-system or multi-system precipitation-strengthened magnesium alloy with excellent comprehensive properties is obtained.
Description
technical field [0001] The invention belongs to the field of material preparation, and in particular relates to a method and system for preparing multi-scale precipitated nano-heterogeneous magnesium alloy plates. Background technique [0002] Magnesium alloy is currently the lightest metal structural material in practical application. It has the characteristics of high specific strength and specific stiffness, good shock absorption, and excellent environmental protection characteristics. application. However, magnesium alloys also have the problems of low strength and poor plasticity. A large number of studies have shown that precipitation strengthening can improve the strength of magnesium alloys, but the plasticity of aging precipitation-strengthened magnesium alloy materials is greatly reduced, which limits the application of precipitation-strengthened magnesium alloys in actual production. Therefore, how to combine high strength and high plasticity has become a resear...
Claims
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IPC IPC(8): B21B1/38B21B47/00B21B15/00C21D9/00
CPCB21B1/38B21B15/0035B21B47/00B21B2001/386B21B2201/06C21D9/0081
Inventor 周浩廖阳许梦凝陈雪飞刘亿徐涛肖礼容李玉胜曹阳
Owner NANJING UNIV OF SCI & TECH