Microstructure control in martensitic stainless steel compacts by metal injection molding

被引：0
作者：
Nakayama H. [1 ]
Kyogoku H. [1 ]
机构：
[1] Castem Co., Ltd., Fukuyama-shi, Hiroshima, 720-0004
来源：
Nihon Kikai Gakkai Ronbunshu, A Hen/Transactions of the Japan Society of Mechanical Engineers, Part A | 2010年 / 76卷 / 770期
关键词：
Martensitic Stainless Steel; Metal Injection Molding; Microstructure; Powder Characteristics; Sintered Materials; Tensile Properties;
D O I：
10.1299/kikaia.76.1310
中图分类号：
学科分类号：
摘要：
Microstructure control in martensitic stainless steel compacts fabricated by metal injection molding was investigated. The specimens were made by injecting the mixture of gas-atomized powder and a polymer binder into a metallic mold. The injection moled compacts were debound in air at a temperature between 533 K and 593 K for 7.2 ks. They were sintered in vacuum at 1573 K and 1623 K for 7.2 ks. The carbon content of the sintered compacts decreased linearly with increasing the debinding temperature. This means that the debinding temperature can control the carbon content of the sintered compacts accurately. The microstructures of the sintered compacts drastically changed from the debinding temperature of 573 K. They became a-phase and r-phase lower than 573 K and only a-phase higher than 573 K. The mechanical properties of the sintered compacts corresponded to the change in the microstructure.
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页码：1310 / 1316
页数：6
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