CAJ | 학술논문

采用自孕育法制备ZA96镁合金半固态组织,研究自孕育工艺参数对ZA96镁合金半固态组织的影响,并从温度场的角度分析工艺参数之间相互作用的本质.结果表明:采用自孕育法铸造,能够获得合格的半固态坯料和浆料.工艺参数对半固态坯料组织影响较大,但对从导流器出口处收集到的浆料在半固态区间进行保温后,发现自孕育剂加入量对组织影响不大,而导流器角度的影响较大.熔体过热度为80~95℃、自孕育剂加入量为5%、导流器角度为45°时,半固态坯料组织的晶粒平均尺寸较小,约为35.6μm;或经552℃、20 s保温后,其晶粒尺寸为45μm,圆整度为1.7.自孕育工艺参数交互作用的本质在于通过自孕育参数的调整从而达到控制其形核的目的.推导出了熔体在导流器出口处的温度与自孕育工艺参数之间的关系式.
채용자잉육법제비ZA96미합금반고태조직,연구자잉육공예삼수대ZA96미합금반고태조직적영향,병종온도장적각도분석공예삼수지간상호작용적본질.결과표명:채용자잉육법주조,능구획득합격적반고태배료화장료.공예삼수대반고태배료조직영향교대,단대종도류기출구처수집도적장료재반고태구간진행보온후,발현자잉육제가입량대조직영향불대,이도류기각도적영향교대.용체과열도위80~95℃、자잉육제가입량위5%、도류기각도위45°시,반고태배료조직적정립평균척촌교소,약위35.6μm;혹경552℃、20 s보온후,기정립척촌위45μm,원정도위1.7.자잉육공예삼수교호작용적본질재우통과자잉육삼수적조정종이체도공제기형핵적목적.추도출료용체재도류기출구처적온도여자잉육공예삼수지간적관계식.
@@@@Semi-solid microstructure of ZA96 magnesium alloy was prepared by self-inoculation method (SIM). The effects of self-inoculation technological parameters on the microstructure of semi-solid ZA96 magnesium alloy were investigated. And the nature of interactive effect between technological parameters was analyzed from the standpoint of temperature field. The results show that high-quality semi-solid billets and slurry can be obtained by SIM. The effects of self-inoculation technological parameters on the microstructure of semi-solid billets are bigger, but for the microstructure of semi-solid slurry which is collected from the exit of the fluid director and holding in semi-solid interval, the effect of self-inoculants is smaller, but that of the angle of fluid director is bigger. When the superheat of the melt is 80?95℃and the addition of self-inoculants is 5%and the angle of fluid director is 45°, the grain size of semi-solid billet is 35.6μm?or after holding 20 s at 552℃, the grain size of primary phase is 45μm and the roundness is 1.7. The interactive nature of self-inoculation technology parameters is to control nucleation by coordinating them. The formula between the temperature of melt in the exit of fluid director and self-inoculation technological parameters was derived.