Li Ming, Gu Mingyuan, Zhang Guoding. Effects of Matrix-alloying-element Cu on the Interfacial Microstructure of C/Al-Cu Composite[J]. Journal of Materials Engineering, 1994, 0(1): 1-3.
The interfacial micarostructure of C/Al-Cu was compared with of C/Al by using TEM and SEM.The mechanism of copper addition in the matrix was studied.It was showing that three kinds of brittle compounds,CuAl2,Al4C3 and AlCu were on the interface.It was also found that CuAl2 did not obviously affec the nucleation of Al4C3,but decreased the growth of Al4C3.For this reason,C/Al-Cu composite could be used at higher temperature.
Xing Zhaping, An Geying, Guo Jianting. Development of Nickel Aluminide Matrix Composited Ⅰ Processing Techniques[J]. Journal of Materials Engineering, 1994, 0(1): 4-7.
This paper provides a comprehensive overview of the recent processing techniques of nickel aluminide matrix composites,including hot pressing,hot extrustion,combustion systhesis,powder injection molding,exothermic dispersion,diffusion bonding,pressure casting,rapid solidification,spray actomization and co-deposition etc.Finally,their virtue and limitation are simply dicused.
Lu Panjin, Feng Lizeng, Zhao Yali, Wang Jinyou, Yu Kun. An Experimental Investigation of Interface in Continuous silicon Carbide Fibre-Reinforced Ti-15-3 Alloy Matrix Composite[J]. Journal of Materials Engineering, 1994, 0(1): 11-12.
In this paper,the fibre/matrix reaction zone in comtinuous SiC fibre-reinforced Ti-15-3 alloy matrix composite has been inititally investigated The experimental results indicate that the thickness of the reaction zone in the SiC/Ti-15-3 sample fabricated by vacuum hot pressing or hot isostatic pressing is approximate-ly 4μm,the concentration of Ti,Si is high and the concentration of V,Cr,Sn and Al is low within the reaction zone.
Zhang Erlin, Zeng Songyan, Jiang Zuling, LiQingchun. Formation of Amorphous Fe50Ti50 prepared by Mechanical Alloying and the Influence of Milling Intensity[J]. Journal of Materials Engineering, 1994, 0(1): 13-14,20.
The formation of amorphous Fe50Ti50 prepared by mechanical alloying(MA) has been investigated by X-Ray diffraction and SEM It is shwn that the process of amorphous formation by MA can be divided into two stages:the stage of fragment and the stage of amorphus formation.In addition,the effect of milling intensity on fromation of amophation also has been studied,It is shown that when the milling intensity is low,the powder needs extend time to become amorphous,When the milling intensity is high,the powder needs short time,but the powder will crystallize and form new phase during further milling.
Zhang Wei, Zhao Zhenye, Feng Yushu, Cao Dashu, Pu Ruhou. The Relationship Between the Coarsed Macro-grain and Microstructure in Ultrahigh-strength Steel[J]. Journal of Materials Engineering, 1994, 0(1): 15-17.
In this papor,the coarwered macro-grain of a new ultrahigh-strength steel used for landing grar of air-plane has been studied.The results showed that both coarsed austenite grain and spoial upper-bonite structure formed during cooling down to the room temperature resulted in coarsed macro-grain.
Gao Jiacheng, Zhang Yaping, Tan Jifu, Zou Zhirong. Composmg of HAP Powder[J]. Journal of Materials Engineering, 1994, 0(1): 18-20.
The composing of HAP powder was studied in this paper.The experiments include the laser and wet composing.Particular attentions have been paid to the mophology,size,composition and structure of HAP powders.This paper has some significance for the study of laser cladding bioceramic coatings.
Li Shijie, Xiong Zheqing. The Domestication of Process Materials Used For MD80/90 Nose Prduction[J]. Journal of Materials Engineering, 1994, 0(1): 21-23.
The dignificance,technical difficulties working substance and procedure of the domestication of process materials used for MD nose subcontract producation have been described,We had made wide investigation and technical demonstration to select technical spoification,approval procedture and designate factory by overcoming many difficulties,made a proposal of uaing more than 140 Chinese materials to substitute U.S.materials and submited DAC for approval.Douglas Aircraft Company had issued 55 SPEO's and approved 101 process materials that Chengdu Aircraft Company,(CAC)could use to produce west civil air-plane.By thsi way the project saves more than ＄200,000 per year for our company more than 1.5 million yuan just for the process materials used for 203 building alumiun surface treatment is saved.This project also has established a strong base for CAC to join world market and becomes a qualified subcontractor.
Hua Wenjun, Zhao Zhenye, Ding Chuanfu. SEM Study on Fatigue Fracture of 300M Steel After Holes Coining Strengthening[J]. Journal of Materials Engineering, 1994, 0(1): 31-34.
Fatigue fracture of 300M steel after holes coining strenthening has been observed in detail by all means of SEM;The characteristic of fatigue crack initiation and propagation has been studied.The mechanism of defered initiation of crack and reduction of crack propagation rate owing to holes coining has been discussed also.
Lei Weisheng, Chen Bingsen. Estimatation of Yield Strength of Structural Stell at Various Strain Rates[J]. Journal of Materials Engineering, 1994, 0(1): 38-39,17.
An approximate approach was introduced to calculate the yield strength of structural steel at verious strain rates with high precision based on two sets of yield strength corresponding to slow strain rates.
Liang Zhiyong, Zhang Zuoguang, Song Huancheng. The Survivability of Military Aircraft and Composite Armor Engineering[J]. Journal of Materials Engineering, 1994, 0(1): 45-47.
The papor reviews the acquisition of survivability in battle field for military plane and the protection technodogy of armor for modern aircraft.A brief introduction of the investigation on aircraft armor and Composite armor materials is presented.
