Wu Hongxing, Guo Dahao, Xia Xiaoping, Wang Shengbo, Dai Yusheng. The Changing-performance-treatment of Material Surface and Its Application by Nd: Glass Laser[J]. Journal of Materials Engineering, 1993, 0(3): 6-8.
This paper discusses the general development of the changing-performance-treatment of material sur-face by laser with special attention on the use of Nd:glass pulse laser.The performances of heat treatmentand its application result on type MG-1 Nd:glass laser are given.
Mei Dun, Temuerfu, Zhang Li. Effects of Rare-earth Element on the Structure and the Abrasion Resistance of Alloy Powder Spray Welding Coating[J]. Journal of Materials Engineering, 1993, 0(3): 9-12.
In this paper,the results show that rare-earth element can lead up to the diminution and even disap-pearance of the bright field and arborescent structure in the spray welding coating.The distribution and formation of metullic-compound (dissociation) can makes the hardness of spray welding coating increase andreduce, but it makes the wear resistence increase.
Sun Fusheng, Zhang Rongshun. Investigation on a Near α Titanium Alloy Ti-8Al-1Mo-1V[J]. Journal of Materials Engineering, 1993, 0(3): 13-17.
In this paper, the melting and heat treatment processes of a near α titunium alloy Ti-8Al-1 Mo-1 Vhave been studied. The experiment result shows that equiaxed microstructure demonstrates good strength andductility at either room or elevated-temperature, as well as a moderate creep resistance and good toughness.The overall property of basket-weave and bimorphlogy microdructure is second to that of equiaxed mi-crostructure.Although the aligned microstructure exhibits the excellent creep resistance,it has very poor duc-tility and toughness.
Liu Bochang. Investigation on Transducer Material Used for Exciting Motor[J]. Journal of Materials Engineering, 1993, 0(3): 18-20.
This article researches to use the method of horizontal continuous casting to produce 0.06～0.10% Ag--Cu alloy wirebars, which can be drawn 15mm diameter into small I-shaped material through 12drawing passes.There are 45ppm content of oxygen, electrical conductivity (IACS)>97%, ball hardnessHB =103～107, yield strength σb≥460N/mm2, softening temp.(t℃) >280℃ and high temp.strength (290℃) 27～28N/mm2.It is an ideal material of exciting motor transducer.
Jiang Pei, Liu Chengyi, Shang Quanli, Chen Jin, Wu Xianyun. A Research of the Process of Dynamic Ion-beam Mixing Implantation Applied in the Pumps of Areo-engines[J]. Journal of Materials Engineering, 1993, 0(3): 25-27,37.
This article deals with a applying research of dynamic ion-beam mixing implanatation for promotingsurface hardness and contact fatigue characteristics of plungers in areo-engine pumps.It has been convincedthat the above new process could strengthen the plungers after the heat-treatments further.The results ofincreasing using lifetime of plungers are satisfactory.
Li Chunyu, Wang Zidong, Li Qingchun. The Development of Metal Matrix Composites by Powder Metallurgy[J]. Journal of Materials Engineering, 1993, 0(3): 34-37.
In this paper, the new ways to make metal matrix composites (MMC) by powder metallurgy are de-scribed, including MA, RHIP,XDTM,HEHR.The structures and properties of MMC by those new waysare discussed.MMC is of great future in the industry of Aeronautics,astronautics and mobiles.
Sun Qiulin. Exploration on the Powder Metallurgy Friction Piece[J]. Journal of Materials Engineering, 1993, 0(3): 38-41.
In this paper,the technological and quality problems which happened in the trial-producing of the pow-der metallurgy friction piece are analysed,then the measures to effectionly solved these problems are put for-ward.
Zhu Zihua. Study on the Phenomenon and Pattern of Orientation of Diaxial Strethching Orientiated Organic Glass[J]. Journal of Materials Engineering, 1993, 0(3): 42-44.
This article reveals the phenomenon and pettern of non-uniform distribution of the orientation of diaxi-al stretching orientated organic glass,shows the cause of this phenomenon and factors affecting its pettern,and provides theoretical analyses and discussions.The author proposes a relatively reasonable orientationgiving out method and some perticular points of attention on use of the materials.
