Drich A. M., Vovninko A. G. Application of Extruded Semi-finished Products from 1450 Al-Li Alloy on Structure of Modern Airfreighter[J]. Journal of Materials Engineering, 1993, 0(10): 1-4.
The effect of elemental composition,ageing specification,deformation between quench-ing and ageing,texture and crystal structure on performance of 1450 alloy was studied inthis paper.Obtained law can be useful for control of production of extruded semifinishedproducts with synthetic properties,and ensure of extensive use of semifinished products onaircraft.
Zhang Zhiyi, Zeng Hanmin. Crosslinking of Polyetheretherketone and Its Uncrystalline Effect[J]. Journal of Materials Engineering, 1993, 0(10): 5-8.
The crosslinking of polytheretherketone (PEEK) caused by melt-treated in air and its uncrystallineeffect have ben studied.Good resistance to solvent is a characteristic of crosslinking,which in related toortho-position substitution in beneylene ring.The crosslinking cause a decrease of crystallization rate andcrystallinity,and a variation of crystalline morphology and unit cell.
Bi Jing, Ma Zongyi, Lu Yuxiong, Shen Hongwei, Gao xinxuan. Hardening Behavior of SiCw/Al-Li Composite[J]. Journal of Materials Engineering, 1993, 0(10): 9-11.
Effect of heat treatment on age hardness characteristic of SiCw/Al-Li composite were systematicallyinvestigated.It was indicated that ageing response of Al-Li alloy is accelerated because of the incorporationof the SiC whisker.The SiCw/Al-Li composite reaches peak hardness in 6 hours on the ageing temperatureof 19O℃.The peak ageing hardness can be increased by increasing solution temperature.Solution timehas no obvious effect on peak hardness of the composite.
Feng Weiki. The Variation of γ' Phase and Its Influence in Superalloy GH37[J]. Journal of Materials Engineering, 1993, 0(10): 12-16.
The dimension,amount,stability,contour and chemical composition of γ' phase as well as their influences on microstructures and properties in superalloy GH37 were discussed in this paper based on the resultsfrom serving life research of turbine blade made of superalloy GH37.The modification measures,such asrecovery heat treatment,were mentioned.
Zhang Xiaozhen, Li Yong, Song Guizhi, Sui Guangzhong, Wang Yunli. The Effect of Temperature on Compression Strength and Shear Strength of Nomex Honeycomb[J]. Journal of Materials Engineering, 1993, 0(10): 17-18,45.
The relationship of the compression strength and shear strength with the temperature of nomex honeycomb are emphatically discussed in this paper.The investigation results show that both compression strengthand shear strength decrease with the increasing of the temperature,but the profiles are different.The compression strength decreases rapidly at the beginning and then decreases slowly with the temperature increase.However,shear strength always keeps a slow decreasing.
Li Shijie, Hu Shiyan. Tackle Key Problems During Specific Processes Got Approval for MD80/90 Nose Subcontract Production[J]. Journal of Materials Engineering, 1993, 0(10): 21-25,29.
The definition of specific process and its position and function in CAC MD8O/90 nose productionhave been described.The specific processes required to meet the requirements of MD nose subcontract production and the main difference in the measuring technique of high temperature,surface treatment,heattreatment,and welding technology between Chengdu aircraft company and Mcdonnell-Douglas aircraftcompany before CAC manufactures MD nose are stated specially.We passed the experts certification andprocess survey of Mcdonnell-Douglas by facility modification and tackling the key problems of processestechnology.Look into the developing direction of our specific process technology,we found that internation cooperational is a effective way in enhancing the specific process technology and modernizing the management of us.
Zeng Chaoliu, Zhang Jianqing, Wu Weitao. High Temperature Corrosion and Protection of Nickel Aluminides[J]. Journal of Materials Engineering, 1993, 0(10): 26-29.
In this paper,oxidation and hot corrosion behaviour of Ni3Al,NiAl intermetallic compounds were reviewed.The effects of several coatings on oxidation and hot corrosion resistance of Ni3Al were also discussed.
Jin Jianjun, Liu Jianyu, Zhou Ruifa. A Specific Direct Ageing Treatment Research for GH33A[J]. Journal of Materials Engineering, 1993, 0(10): 30-32,37.
A specific direct ageing treatment technique used for precipitation hardened nickel-base superalloys isintroduced in This paper.this technique can greatly increase the yield strength and tensile strength of nickelbase superalloy GH33A.The result demonstrates that the specific direct ageing treated GH33A has highstrength approaching the strength levle of Inconel718.Because of adding presolution treatment,the significant strengthening can be achieved for GH33A at high forge temperature,and some defects in usual DAtreatment to low forge temperature can be overcome.
