*452· 北京科技大学学报 1998年第5期 Aluminium Alloy Compositer.Scr Metall,1992,27:107 3 Song Y Baker T N.Accelerated Aging Processes in Ceramic Reinforced AA6061 Composites.Mater Sci Technol,1994(10):406 4 Suresh S,Christman T,Sugimura Y.Accelerated Aging in Cast Al Alloy-SiC Particulate Composites. Ser Metall,.1989,23:1599 5 Dutta I,Bourell D L.A Theoretical and Experimental Study of Aluminium Alloy-SiC Whisker Composite.Mater Sci Eng,1989,112A:67 6 Christman T,Suresh S.Microstructural Development in An Aluminum Alloy-Sicwhisker Composite. Acta Metall,1988,36:1691 7 Arsenault R J,Shi N.Dislocat Generate Due to Differences between the Coefficients of Thermal Expansion.Mater Sci Eng,1986,81:175 8 Brotzen F R.Mechanical Testing of Thin Films.Inter Mater Rev,1994,39:24 9刘兴江.喷射沉积2014铝合金+SiC与250型马氏体时效钢+A,0,颗粒增强金属基复合材料的组织与 性能研究：[硕士论文].北京：北京科技大学，1996 10 Liaw P K.Mechanical Properties of Particalate Reinforced Metal Matrix Composites.MRS Bull, 1989,14:25 11 Jienlin S U,Liu K S.Effect of Aging on Abrasion Rate in An Al-Zn-Mg-Sic.Wear,1988,121:1 12 Shimizu K,Okamoto H.Transmission Electron Microscopy Study of Strengthening Precipitation 18%Ni Maraging Steel.Trans JIM,1971(12):273 13 Zhang J S,Lui X J,Ciu H,Sun Z Q.Chen G L.Aging Behaviour of Spray-deposited 18Ni(250) Maraging Steel+10%Al,O,Particulate-reinforced Metal Matrix Composites.Mater Sci Eng 1997, 225A:96 Microstructure and Properties of Spray Deposited 18Ni(250)Maraging Steel-(Al,O)p Composite Zhang Jishan Liu Xingjing Cui Hua Duan Xianjin Chen Guoliang State Key Laboratory for Advanced Metals and Materials,Material Sciences and Engineering School, UST Beijing.Beijing 100083.China ABSTRACT Spray forming technique has been applied to prepare 18Ni(250)maraging steel+10%Al,O,particulate reinforced metal matrix composite.The spray deposited preform shows high density and favourite microstructures such as homogeneous distribution of the reinforcement particulates and free from interface reaction.Compared with the matrix 18Ni maraging steel,the composite demonstrated an accelerated aging behaviour.After heat treatment,the composite material shows a tensile strength near the matrix steel,with much improved wear resistance.Nanoindentation investigation of the aging process of the composite material shows that there exists a sharp distribution of elastic modulus and microhardness around Al,O,particulates,which can be attributed to the distribution of precipitate caused by the thermal misfit dislocation distributions. KEY WORDS spray forming;steel matrix;composite. 45 2 . 北 京 科 技 大 学 学 报 1 99 8年 第 5期 lA 切rn l in um lA l o y C o m po s i et r . S e r M e alt l , 19 92 , 2 7 : 1 0 7 3 S o n g Y B ak e r T N . cA e e l e ar t e d gA i n g P ocr e s s e s i n 0 r a n 1 i e eR 1 n f o 戊 e d A A 6O6 l C o m op s i te s . M a te r S c i eT c itn o l , 19 94 ( 10 ) : 4 0 6 4 5眠 s h s , 〔肠对s tm an T , S u g im aur Y . A e e e l e ar te d A g i n g i n C as t IA lA l o y 一 S IC P a 内 e ul a te C o m p o s i te s . S e r M e 园l , 19 8 9 , 2 3 : 1 5 9 9 5 Lh 】 at l , B o uer ll D L . A T卜e o er it e al an d xE pe ir m e n alt S t ud y o f A l u r n I in um lA l o y 一 S IC W l l i s k e r oC m po s iet . M 豆et r S e i E ng , 1 989 , 1 1 2 A : 6 7 6 C肠ir s tm an T , S眠 s h 5 . 碱 e or s it u c tu n d 块 v e l o Pm e n t i n A n A l um i n tun lA l o y 一 S i c w ih s k e r C o m op s l te . A C at M e atl l , 1 98 8 , 3 6 : 1 6 9 1 7 A sr e n a 日 t R J , Sih N . 众 s l oc a t 仪 n e ar te E 泊e ot 压fe re n e e s be tw e e n ht e C oc if c i e n ts o f hT e rm al xE P an s i o n . M a te r S e i nE g , 1 9 8 6 , 8 1 : 1 7 5 8 B or tz e n F R . M e e h an 1 c al eT s it gn o f T l 11 n R l m s . nI te r M a te r eR v , 19 9 4 , 3 9 : 2 4 9 刘兴江 . 喷射沉积 2 0 14 铝合金 + is C 与 2 50 型 马 氏体 时效钢 + 1A 2 0 3颗粒增强 金属 基复合材料 的组织与 性能研究 : [ 硕 士论 文] . 北京 : 北京科技大学 , 1 9% 10 iL aw P K . M e e h an j e al rP o pe irt e s o f P的 e a l a et 比i l l fo 代 e d M e alt M a itr x C o m po s i et s . M RS B 己l , 19 8 9 , 1 4 : 2 5 1 1 iJ e ul i n S U , iL u K 5 . E f fe e t o f gA i n g o n A b ars i o n aR te in nA IA 一 nZ 一 M g 一 Si e . W e ar , 1 9 8 8 , 12 1 : l 1 2 S hi 而z u K , o k aJ 的o ot H . T 门nL s而s s i o n 日e e otr n 珑e or s e o Py S tu d y o f S etr n g ht e in n g P代 e i iP刚 o n 1 8%断 M 盯ag i n g S et e l . T ar n s IJ M , 19 7 1 ( 12 ) : 2 7 3 1 3 2为a n g J S , L ul X J , C i u H , S un Z Q , C h e n G L . gA i ng B e h va i o ur o f S Pm y 一 de po s i et d 1 8蹄(2 5 0) M盯昭i n g S et e l + 1 0% 月 ZO 3 p 翻 c ul a et 一 er i nfo 代e d Me alt Ma itr x oC m osP i et s · Ma et r S c i nE g , 1 99 7 , 2 2 5 A : 9 6 M i c r o s trU e ut r e an d P r o P e rt i e s o f S P r ay D e P o s i t e d 1 8 N i ( 2 5 0 ) M ar a g i n g s t e e l 一 (A 1 2 o 3 ) P C o mP o s it e 及 a n g isJ h a n S at et 众 y 肠bo ar ot yr 刀 u Xi 刀灯l’n g uC i uH a uD an ix a nj in fo r A d y 如 e e d M e alt s an d M a et ir ia S , M a 记 ir al S e i e cn e S hC e n G u o lia gn 胡d nE gi ne e ir 飞 S e ho l , U S T B e ij i gn , B e ij i n g 10 0 0 8 3 , C hi na A B ST R A C T S P ra y fo rm i n g te c h in q u e h as be e n a P Pli e d to Pre P a re 1 8M ( 2 5 0 ) m a ra g i n g s te e l + 1 0% A 1 2 O 3 p a irt c u l a te re i n fo rc e d m e tal m a 川x c o m 卯 s ite · hT e s p卿 d e oP s ite d p re fo rm s h o w s hi g h d e n s ity a n d fa v o u ir te 而 c ro s tru c tu re s s u c h as h o m o g e ne o us d i s itr bu it o n o f ht e re i n fo 代e m e n t P a in e u l a te s an d fre e fro m i n to d认e e re ac it o n . C om P are d w iht ht e m a itr x 18瓦 m a ra gi n g s te e l , ht e e o m P o s i et d e m o n s tr a et d a n ac e e l e ar et d ag i n g be h va i o u r . A fet r h e a t etr a lnt e n t , het e o m po s i et m a et ir a l s h o w s a et n s il e s etr n g ht ne ar ht e m a tir x s et e l , w i ht m cu h im P or v e d w e a r er s i s at n e e . aN n o i n d e n at it o n i n v e s it g iat o n o f ht e ag i n g p cor e s s o f het e om po s i et m a et ir a l s h o w s ht a t t h e er e x i s st a s h a pr d i s itr bu it o n o f e l as it e m do u lus an d 而c or h adr n e s s ar o u n d A 1 2 0 3 p a irt c u l a et s , w ih c h c a n be a t tir b u et d ot ht e d i s itr bo it o n o f Per e iP i at et c aus e d by ht e ht e mr a l m i s if t d i s lco a it o n d i s tir b u it o n s . K E Y W O R D S s P r a y fo mr i n g ; s et e l m a itr x ; e o m P o s i et