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结晶速度对Mg-1.5Mn-Al合金凝固组织和性能的影响

Lu GUO,Qiu-shu LI,Yan ZHANG,Qian-ke ZHU,Ya-lu WU,Peng-cheng YU

Foundry Equipment and Technology（2015）

Cited 23|Views2
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Abstract
采用定向凝固工艺,研究了在一定的温度梯度下,结晶速度对Mg-1.5 Mn-Al合金凝固组织和力学性能的影响.研究表明,随着结晶速度的逐渐增大,Mg-1.5Mn-Al合金通过定向凝固形成的柱状晶的宽度逐渐变窄,同时合金抗拉强度也逐渐增大.当结晶速度为100 μm/s时,合金的抗拉强度达到193 MPa,与铸态合金相比,提升了124％.
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Key words
crystallization rate,alloy,microstructure
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