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2篇 您的检索式：作者名="Mamoru Tajima"

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		题名	作者	年代	出处	被引量
	1	Development of New Sliver Probe for Cooling Power Test of Polymer Quenchants显示文摘Working group on cooling power test of quenchants of Japanese Heat Treatment Society has studied on the new method for testing cooling power of aqueous quenchants. This method employed the cooling curve test of a new sliver rod probe, which has a metal-sheathed thermocouple at its geometrical center. The experimental study has clarified that the new silver probe has more excellent durability than the JIS silver probe employed for cooling power test of heat treating oils (JIS K 2242) and an aluminum alloy probe. Good repeatability and reproducibility of the cooling curves during polymer quenching have been confirmed. This new method is useful especially for cooling power test of aqueous quenchants used for solution heat treatment of aluminum alloys. This new silver rod probe is expected to be adopted for the revised version of JIS K 2242 as the cooling power test method for aqueous quenchants.	Michiharu NARAZAKI Mamoru TAJIMA Shigeru ASADA Katsumi ICHITANI Hideo YOKOTA Mitsugu TANAKA Youichi WATANABE	2004	材料热处理学报2004，25，5：	0
	2	Verification of Inverse Quench-Hardening Phenomena in Bearing Steel Specimens by Experiment and Computer Simulation显示文摘The appearance of lower hardness at the surface than at the core after through-hardening of steels is known as 'inverse quench-hardening.' Pioneering work was performed in the 1970s by establishing a simple test procedure where cylindrical specimens were cooled by air and brine sequentially to produce the effect. This phenomenon was described in relation to the polymer quenching and its effect to the improvement in the fatigue strength of the steel in the 1990s. The hardening mechanism in the same specimens as the pioneering work was recently examined using a finite element simulation method. However, this work has not been completed for lack of experimental quenching cooling curves for the comparisons. In this study, the same experiments using 20mm diameter cylindrical specimens as those of the pioneering work were conducted to obtain cooling curves and hardness distributions for comparing simulated results. Experimental cooling curves showed a temperature recovery as predicted by the simulation. Also the inverse quench-hardening phenomena were found in the measured and simulated hardness distributions of the specimens.	Kyozo Arimoto Chuanrong Jin Shigeyuki Tamura Kiyoshi Funatani Mamoru Tajima	2004	材料热处理学报2004，25，5：	0

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