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Development and evaluation of P/M pr...

Sago, James Alan.

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Development and evaluation of P/M processing techniques to improve and control the mechanical properties of metal injection molded parts.

紀錄類型:	書目-電子資源 : Monograph/item
正題名/作者:	Development and evaluation of P/M processing techniques to improve and control the mechanical properties of metal injection molded parts./
作者:	Sago, James Alan.
面頁冊數:	135 p.
附註:	Source: Dissertation Abstracts International, Volume: 65-08, Section: B, page: 4261.
Contained By:	Dissertation Abstracts International65-08B.
標題:	Engineering, Metallurgy. -
電子資源:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3143770
ISBN:	0496018590

Development and evaluation of P/M processing techniques to improve and control the mechanical properties of metal injection molded parts.
Sago, James Alan.

Development and evaluation of P/M processing techniques to improve and control the mechanical properties of metal injection molded parts. - 135 p.

Source: Dissertation Abstracts International, Volume: 65-08, Section: B, page: 4261.

Thesis (Ph.D.)--University of Missouri - Rolla, 2004.

Metal Injection Molding (MIM) is one of the most rapidly growing areas of powder metallurgy (P/M) but the growth of MIM into new markets and more demanding applications is limited by two fundamental barriers, the availability of low cost metal powders and a lack of knowledge and understanding of how mechanical properties, especially toughness, are affected by the many parameters in the MIM process. The goals of this study were to investigate solutions to these challenges for MIM.

ISBN: 0496018590Subjects--Topical Terms:

1023648
Engineering, Metallurgy.

Development and evaluation of P/M processing techniques to improve and control the mechanical properties of metal injection molded parts.
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520 $a Metal Injection Molding (MIM) is one of the most rapidly growing areas of powder metallurgy (P/M) but the growth of MIM into new markets and more demanding applications is limited by two fundamental barriers, the availability of low cost metal powders and a lack of knowledge and understanding of how mechanical properties, especially toughness, are affected by the many parameters in the MIM process. The goals of this study were to investigate solutions to these challenges for MIM.
520 $a Mechanical alloying (MA) is a technique which can produce a wide variety of powder compositions in a size range suited to MIM and in smaller batches. However MA typically suffers from low production volumes and long milling times. This study will show that a saucer mill can produce sizable volumes of MA powders in times typically less than an hour. The MA process was also used to produce powders of 17-4PH stainless steel and the NiTi shape memory alloy for a MIM feedstock. This study shows that the MA powder characteristics led to successful MIM processing of parts.
520 $a Previous studies have shown that the toughness of individual MIM parts can vary widely within a single production run and from one producer to another. In the last part of the study a Design of Experiments (DOE) approach was used to evaluate the effects of MIM processing parameters on the mechanical properties. Analysis of Variance produced mathematical models for Charpy impact toughness, hardness, density, and carbon content. Tensile properties did not produce a good model due to processing problems. The models and recommendations for improving both toughness and reproducibility of toughness are presented.
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