Hot Powder Vehicle Compaction of an Atomized Stainless Steel Powder

雾化不锈钢粉末的热粉末载体压实

基本信息

  • 批准号:
    62550496
  • 负责人:
  • 金额:
    $ 1.15万
  • 依托单位:
  • 依托单位国家:
    日本
  • 项目类别:
    Grant-in-Aid for General Scientific Research (C)
  • 财政年份:
    1987
  • 资助国家:
    日本
  • 起止时间:
    1987 至 1988
  • 项目状态:
    已结题

项目摘要

Densification and microstructural development of stainless steel powder during hot powder vehicle compaction was investigated. The preheated powder preform, vacuum encapsuled in a borosilicate glass, was compacted in a steel die using preheatedalumina granules as a pressure transmitting medium. The condition for the full-densification was determined as a function of pressure and temperature. The increase in pressure was more effective than in temperature. Three microstructural features were odserved during the compacting process; Solutioning of dendritic structure, recrystallization and normal grain growth, which in turn was found to be mainly dependent of preheating temperature. It has been found that a submicron-sized microstructure is formed during the recrystallization stage. the densification mechanism of the present compaction process has been discussed on a concept of pressure sintering map.
研究了不锈钢粉末在热粉末台车压制过程中的致密化和组织演变。将预热后的粉末预制体在硼硅酸盐玻璃中真空烧结,然后用预热的氧化铝颗粒作为传压介质在钢模中压制。确定了全致密化的条件作为压力和温度的函数。压力的增加比温度的增加更有效。在压制过程中观察到三种显微组织特征:枝晶组织的溶解、再结晶和正常晶粒生长,而这又主要取决于预热温度。已经发现,在再结晶阶段期间形成亚微米尺寸的显微组织。本文从压力烧结图的概念出发,讨论了目前压制工艺的致密化机理。

项目成果

期刊论文数量(1)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)
宮島雅文、川崎亮、渡辺龍三: 日本金属学会誌.
Masafumi Miyajima、Ryo Kawasaki、Ryuzo Watanabe:日本金属学会杂志。
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WATANABE Ryuzo其他文献

WATANABE Ryuzo的其他文献

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{{ truncateString('WATANABE Ryuzo', 18)}}的其他基金

Powder Metallurgical Processing and Development of Functional Composites
粉末冶金加工及功能复合材料的开发
  • 批准号:
    11221203
  • 财政年份:
    1999
  • 资助金额:
    $ 1.15万
  • 项目类别:
    Grant-in-Aid for Scientific Research on Priority Areas (B)
Powder Metallurgical Fabrication of Artificial Tooth Root of Hydroxyapatite/Ti with Bio-mimetic Structure
粉末冶金仿生结构羟基磷灰石/钛人工牙根的制备
  • 批准号:
    10555239
  • 财政年份:
    1998
  • 资助金额:
    $ 1.15万
  • 项目类别:
    Grant-in-Aid for Scientific Research (B)
Optimization of fatigue property of ceramic coating for next-generation gas turbine
新一代燃气轮机陶瓷涂层疲劳性能优化
  • 批准号:
    09305048
  • 财政年份:
    1997
  • 资助金额:
    $ 1.15万
  • 项目类别:
    Grant-in-Aid for Scientific Research (A)
Fracture Toughness Control in Functionally Gradient Material
功能梯度材料的断裂韧性控制
  • 批准号:
    07045018
  • 财政年份:
    1995
  • 资助金额:
    $ 1.15万
  • 项目类别:
    Grant-in-Aid for international Scientific Research
Development of Thermal Shock Testing System for Functionally Graded Materials
功能梯度材料热冲击测试系统的研制
  • 批准号:
    06555190
  • 财政年份:
    1994
  • 资助金额:
    $ 1.15万
  • 项目类别:
    Grant-in-Aid for Developmental Scientific Research (B)
Consolidation of low-sinterability powders with applying medium isostatic pressure
通过施加中等等静压来固结低烧结性粉末
  • 批准号:
    06452331
  • 财政年份:
    1994
  • 资助金额:
    $ 1.15万
  • 项目类别:
    Grant-in-Aid for Scientific Research (B)
Fabrication of Multi-Functional Sintered Materials with Graded Compositional Distribution
具有梯度成分分布的多功能烧结材料的制造
  • 批准号:
    03453064
  • 财政年份:
    1991
  • 资助金额:
    $ 1.15万
  • 项目类别:
    Grant-in-Aid for General Scientific Research (B)
Fabrication of Multi-Functional Ceramic Composites by Slurry Stacking Method
浆料堆积法制备多功能陶瓷复合材料
  • 批准号:
    03555146
  • 财政年份:
    1991
  • 资助金额:
    $ 1.15万
  • 项目类别:
    Grant-in-Aid for Developmental Scientific Research (B)
Fabrication of High Pressure Rocket Combustor by Powder Metallurgy
粉末冶金高压火箭燃烧室的制造
  • 批准号:
    01850151
  • 财政年份:
    1989
  • 资助金额:
    $ 1.15万
  • 项目类别:
    Grant-in-Aid for Developmental Scientific Research
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