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您的检索式：作者名="K.H. W.Seah"
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| 1 | Fracture Toughness of Cast Al-Zn-Mg Alloys显示文摘Compact tension specimens of as-cast Al-3Zn-2Mg and Al-7Zn-2Mg (in wt pct) alloys were subjected to fracture toughness tests at room temperature according to specification5 laid down in ASTM E-399-81. It was found that increasing the Zn content, grain refinement and increasing the solidification rate lead to an increase in the fracture toughness of the material. | K.H. W.Seah(Dept. of Mech. Eng., National University of Singapore, Singapore 0511)S. C. Sharma (To whom correspondence should be addressed)(Dept. of Mech. Eng., R.V.College of Engineering, Bangalore-560-059, Karnataka, India) | 1996 | Journal of Materials Science & Technology1996，12，3： | 1 |
| 2 | Comparing the Effectiveness of Coatings on Carbide andCermet Cutting Tool Inserts显示文摘A series of metal cutting experiments was performed on a CNC lathe to evaluate the performance of various coatings on different tool substrates. The workpiece material was plain medium carbon steel and the cutting tool materials were carbide and cermet inserts coated with various single as well as multilayer coatings. Machining was done under various cutting conditions of speed and feed-rate, and for various durations of Cutting. The output parameters studied were the cutting forces (axial, radial and tangential), the surface roughness of the workpiece, as well as the tool wear (crater and flank wear). From these results, the performances of the various cutting inserts are evaluated and compared. Results show that cutting forces are significantly lower when using coated cermets than when using coated carbides although different coatings on the same substrate also result in different cutting forces. However, there is less difference in the surface roughness of the finished workpiece for the various coatings and substrates. | K.H. W.Seah M.Rahman and C.H.Lee (Dept. of Mech. & Prod. Eng., National University of Singapore, 10 Kent Ridge Crescent, Singapore 0511 T.N.Goh (Dept. of Ind. & Sys. Eng., National University of Singapore, 10 Kent Ridge Crescent, Singapore 0511) | 1995 | Journal of Materials Science & Technology1995，11，4： | 0 |
| 3 | Effect of Heat Treatment on the Corrosion Characteristics of Al-Li Alloys显示文摘Experiments were conducted to study the general room temperature corrosion characteristics of heat-treated and non-heat-treated Al-Li alloys with different Li compositions. Corrosion rate was measured using both the polarisation method and the weight-loss method. It was observed that the samples with higher Li content had lower corrosion resistance than those with lower Li content. Moreover, for all the specimens tested, it was fOund that heat treatment at 180℃ for 2 h (for the purpose of precipitation hardening) severely reduced the corrosion resistance,whereas heat treatment at 180℃ for 6 h significantly increased the corrosion resistance. | K.H. W.Seah(Dept. of Mechanical Engineering, National University of Singapore, 10 Kent Ridge Crescent, Singapore 0511)(To whom correspondence should be addlessed)S. C. Sharma(Dept. of Mechanical Engineering, R.V.College of Engineering, Bangalore -560-059, | 1995 | Journal of Materials Science & Technology1995，11，5： | 0 |
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