He Guo, Li Jianguo, Mao Xiemin, Fu Hengzhi. Influence of Crystallographic Orientations on Dendrite Morphologies in a Ni-Based SC Superalloy[J]. Journal of Materials Engineering, 1994, 0(2): 1-3.
The irifluence of crystallographic orientations on dendritic morphologies in a SC suporalloy has been investigated. The results indicate that,an obviotis change of the geometrical arrangement of primary dendrites and unsymmetric secondary arms occur for different crystallographic orientations.
Ye Wujun, Feng Di, Han Guangwei, Luo Heli, Chen Beijing. Carbide Deposit in Ni2Al Based Alloy[J]. Journal of Materials Engineering, 1994, 0(2): 4-5.
TiC,Cr23C6 are the main carbides deposited from the Cr and Ti strengthened Ni3Al base alloy. There is some relationship of lattice between γ' and Cr23C6. The phenomenon of TiC→M23C6+γ' is existed if it is kept under the temperature of 950℃ for a long time.
Geng Li, Yuan Zhejun, Yang Hui, Yao Zhongkai. Effects of Whisker Orientation on the Quality of Cutting Surface of the SiCw/Al Composite[J]. Journal of Materials Engineering, 1994, 0(2): 6-7,29.
The angle between the whisker orientation direction and cutting direction(cutting angle) has much effects on the cutting surface quality of the SiCw/Al composite.When the cutting angle is 45°,the amount of the pulled out or rotated SiC whisker is lower, so the snrface finish of Ra is the lowest;when the cutting angle is 135°,lots of SiC whiskers are rotated which leads to a serious torn fracture on the cutting surfaces,so the surface finish of Ra is the highest.
Guo Jianting, Xing Zhanping, An Geying. Development of Nickel Aluminide Matrix CompositesⅡInterface and Mechanical Properues[J]. Journal of Materials Engineering, 1994, 0(2): 8-13.
This paper provides a comprehensive overvew of the interface compatibillity between various reinforcements and nickel aluminide matrices and of the mechanical proprties of nickel aluminide matrix composites. The direction for future development of IMCs is also discussed.
Xu Hua, Guo Mengxiong. Research on Growth Process of SiCw Made from Rice Hulls[J]. Journal of Materials Engineering, 1994, 0(2): 14-16.
The microtructure and morphology of silicon carbide whiskers grown from rice hulls has ben studied by using TEM. The results show that silicon carbide whisker is one-dimension VLS growth process. The changing of furnace's power and heat lossing can affect the SiCw's morphology and diameter seriously. The largrr the furnace's power is,the rotigher the SiCw diameter is,the more the heat lossing is,the wider the SiCw diameter is. Not only diameter of SiCw is wider,but also the morphology of SiCw is rougher when Argon is used than Hydrogen.
Pei Yutao, Ouyang Jiahu, Lei Tingquan. Study of Laser Clad Ni-base Alloy/ZrO2(4Y)Ceramic Layer on the Surface of 45 Steel[J]. Journal of Materials Engineering, 1994, 0(2): 22-24,21.
In this paper the microstructure and hardness of laser clad Ni-base/ZrO2(4Y) ceramic layer on the surface of 45 steel are examined by SEM、EDAX、XRD and microdurometer. A layering phenomenon is observed in laser cladded zone, in which there are two layers:ZrO2 ceramic surface layer followed by solidified Ni-base solid solution. The ceramic layer mainly consists of t-ZrO2 and γ-Ni phases. The quick melting and solidifying caused by laser processing restrains T→m-ZrO2 phase transformation. under appropriate processing parameters,a homogeneous and non-porous ZrO2 ceramic layer is obtained, and its microbardness is up to HV0.21720.
Feng Yushu, Zhang Wei, Zhao Zhenye, Ye Wujun. The Study on the Standard Sample in Etch Inspection of Tempered 300M Steel[J]. Journal of Materials Engineering, 1994, 0(2): 27-29.
The characteristics of overheat in 300M Steel was studied. The standard sample in etch inspotion was produced.The sample was practical in checking the etch solution.
Jiang Pei, Jiao Jianmn, Cui Weijun. The Failure Analysis on Drive Shafts in Hydraulic Pumps of Y-8 Airplane[J]. Journal of Materials Engineering, 1994, 0(2): 34-36.
In this paper,the investigation is made on the process,major reasons and factors of the fracture of drive shafts in hydraulic pumps of Y-8 airplane on the basis of a series of experiments. The measures of avoiding failure reappoarance are provided.
Dai Zhaochen. The Development and Present ofthe Artificial Implant Materials[J]. Journal of Materials Engineering, 1994, 0(2): 40-41,39.
A development review is glven for the artificial implant materials from the history and the clinic application. The investigations about the problems of hydroxglapatite bioactire ceramic are being extensively develoed now in the world.
