Sökning: "PM steels"
Visar resultat 11 - 15 av 24 avhandlingar innehållade orden PM steels.
11. Temperature dependent mechanical properties of as-cast steels : Experimental and theoretical studies
Sammanfattning : The temperature-dependent mechanical properties of steels are important to avoid processing defects, to understand and to improve the high-temperature performance. At the same time, having access to thermal properties gives us opportunity to assess the first-principles theoretical predictions at elevated temperatures. LÄS MER
12. High Performance Manufacture of Sintered Steel – Critical Aspects of Tooling Performance and Sintered Microstructure
Sammanfattning : Steel is the dominant material for the production of structural parts. By means of powder metallurgy (PM) processing, manufacturers have been able to manufacture steel parts with appreciable dimensional accuracy and desirable mechanical properties. LÄS MER
13. Deformation and Fatigue Behaviour of Porous and Dense Austenitic Stainless Steel
Sammanfattning : PM stainless steels are increasing in use and are expected to do so in the future. A lot of work has been carried out concerning production and sintering of stainless steel powders and on the resulting corrosion behaviour. The deformation behaviour of these materials is less studied. LÄS MER
14. High Resolution Microanalysis of Creep Resistant 9-12% Chromium Steels
Sammanfattning : This thesis deals with detailed studies of the microstructure of 9-12% chromium steels. Three alloys with improved creep resistance have been studied in different stages of heat treatment and after creep testing. Two of them were manufactured using PM/HIP and were of the type 10. LÄS MER
15. Critical Aspects of High Performance Manufacturing of Structural Sintered Steel
Sammanfattning : Steel is the dominant material for the production of structural parts. By means of powder metallurgy (PM) processing, manufacturers have been able to manufacture steel parts with appreciable dimensional accuracy and proper mechanical properties. LÄS MER