Microalloying AZ91 magnesium alloy with high strength and proper solderability and preparation method thereof
A technology of micro-alloying and AZ91, which is applied in the field of high-strength weldable magnesium alloy and its preparation, high-strength weldable micro-alloyed AZ91 magnesium alloy and its preparation, can solve the problems of high alloy content, reduced mechanical properties of materials, and low welding performance. problems, to achieve the effects of simple process, improved mechanical properties and welding performance, and convenient operation
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Embodiment 1
[0029] According to the composition ratio of magnesium alloy:
[0030] Al
Zn
mn
Si
Ca
Y
Mg
9
0.6
0.3
0.1
0.1
0.3
margin.
[0031] Take industrially pure Mg (99.9%), pure Al (99.5%), pure Zn (99.9%), Mg-20% Ca, Mg-25.63% Y and elemental Si respectively, and melt them in a crucible in a resistance furnace. Before smelting, all the tools need to be dried first. During the smelting process, the (RJ-2) flux produced by Lianyungang Jingsheng New Material Co., Ltd. is used as the covering agent and refining agent. The melting temperature is 750°C. Add Mg block, after the Mg block is melted, add Zn, Al, Mn, Si in turn, in order to prevent the master alloy from burning, finally add the master alloy Mg-20%Ca and Mg-25.63%Y, after adding all the raw materials, the melt Stand still for 15 minutes, refine for 5 minutes, and finally stand still for 15 minutes. After the slag and melt are separated, cast. 2 Atmosphere p...
Embodiment 2
[0042] According to the composition ratio of magnesium alloy:
[0043] Al
Zn
mn
Si
Ca
Y
Mg
9
0.6
0.3
0.1
0.2
0.4
margin.
[0044] Take industrially pure Mg (99.9%), pure Al (99.5%), pure Zn (99.9%), Mg-20% Ca, Mg-25.63% Y and elemental Si respectively, and melt them in a crucible in a resistance furnace. Before smelting, all the tools need to be dried first. During the smelting process, the (RJ-2) flux produced by Lianyungang Jingsheng New Material Co., Ltd. is used as the covering agent and refining agent. The melting temperature is 750°C. Add Mg block, after the Mg block is melted, add Zn, Al, Mn, Si in turn, in order to prevent the master alloy from burning, finally add the master alloy Mg-20%Ca and Mg-25.63%Y, after adding all the raw materials, the melt Stand still for 15 minutes, refine for 5 minutes, and finally stand still for 15 minutes. After the slag and melt are separated, cast. 2 Atmosphere p...
Embodiment 3
[0055] According to the composition ratio of magnesium alloy:
[0056] Al
Zn
mn
Si
Ca
Y
Mg
9
0.6
0.3
0.1
0.3
0.5
margin.
[0057] Take industrially pure Mg (99.9%), pure Al (99.5%), pure Zn (99.9%), Mg-20% Ca, Mg-25.63% Y and elemental Si respectively, and melt them in a crucible in a resistance furnace. Before smelting, all the tools need to be dried first. During the smelting process, the (RJ-2) flux produced by Lianyungang Jingsheng New Material Co., Ltd. is used as the covering agent and refining agent. The melting temperature is 750°C. Add Mg block, after the Mg block is melted, add Zn, Al, Mn, Si in turn, in order to prevent the master alloy from burning, finally add the master alloy Mg-20%Ca and Mg-25.63%Y, after adding all the raw materials, the melt Stand still for 15 minutes, refine for 5 minutes, and finally stand still for 15 minutes. After the slag and melt are separated, cast. 2 Atmosphere p...
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