兵器材料科学与工程
兵器材料科學與工程
병기재료과학여공정
Ordnance Material Science and Engineering
2013年
6期
55-57
,共3页
迟长志%燕永文%崇振%战春阳
遲長誌%燕永文%崇振%戰春暘
지장지%연영문%숭진%전춘양
过共晶铝硅合金%微观组织%相组成%冲击韧性%耐磨性
過共晶鋁硅閤金%微觀組織%相組成%遲擊韌性%耐磨性
과공정려규합금%미관조직%상조성%충격인성%내마성
hypereutectic Al-Si alloy%microstrcture%phase composition%impact toughness%wear resistance
以纯镁、纯铝、结晶硅、Al-50%Cu中间合金为原材料,采用电阻炉熔化重力浇注法制备不同成分的过共晶铝硅合金。采用正交试验方法,探讨合金固溶时效处理后不同含量的15%~21%Si、1.5%~2.0%Cu、0.3%~0.7%Mg合金元素对过共晶铝硅合金硬度的影响;利用金相显微镜观察不同元素含量的过共晶铝硅合金的组织,用X线分析其相组成,用磨损试验机测试质量损失。结果表明:最佳配比为1.5%Cu、0.7%Mg、21%Si,其相组成为α-Al基体、初晶硅相和共晶硅相以及Mg2Si和Al2Cu相,布氏硬度达到132HB,耐磨损性能较高但冲击韧性下降。
以純鎂、純鋁、結晶硅、Al-50%Cu中間閤金為原材料,採用電阻爐鎔化重力澆註法製備不同成分的過共晶鋁硅閤金。採用正交試驗方法,探討閤金固溶時效處理後不同含量的15%~21%Si、1.5%~2.0%Cu、0.3%~0.7%Mg閤金元素對過共晶鋁硅閤金硬度的影響;利用金相顯微鏡觀察不同元素含量的過共晶鋁硅閤金的組織,用X線分析其相組成,用磨損試驗機測試質量損失。結果錶明:最佳配比為1.5%Cu、0.7%Mg、21%Si,其相組成為α-Al基體、初晶硅相和共晶硅相以及Mg2Si和Al2Cu相,佈氏硬度達到132HB,耐磨損性能較高但遲擊韌性下降。
이순미、순려、결정규、Al-50%Cu중간합금위원재료,채용전조로용화중력요주법제비불동성분적과공정려규합금。채용정교시험방법,탐토합금고용시효처리후불동함량적15%~21%Si、1.5%~2.0%Cu、0.3%~0.7%Mg합금원소대과공정려규합금경도적영향;이용금상현미경관찰불동원소함량적과공정려규합금적조직,용X선분석기상조성,용마손시험궤측시질량손실。결과표명:최가배비위1.5%Cu、0.7%Mg、21%Si,기상조성위α-Al기체、초정규상화공정규상이급Mg2Si화Al2Cu상,포씨경도체도132HB,내마손성능교고단충격인성하강。
With pure aluminum,pure magnesium crystal,silicon,intermediate alloy (Al - 50% Cu) as raw material, hypereutectic Al-Si alloys were prepared by the method of resistance furnace melting and gravity casting preparation. Using orthogonal test method,the effect of different content alloying elements of 15%to 21%Si,1.5%to 2.0%Cu,0.3%to 0.7%Mg on hardness of hypereutectic aluminum-silicon alloy treated by solid solution aging was studied. Metallographic microscope was used for microstructure observation,X-ray analysis for the phase composition,and abrasion tester for weight loss. Experimental results show that the optimun ratio for the content of Cu,Mg,Si is 1.8%,0.3%,21%,respectively. The phase composition consists of alpha-Al matrix phase and primary silicon and eutectic silicon phase and phase Mg2Si and Al2Cu. Brinell hardness is 132HB,and wear resistance is higher,while impact toughness drops.