Author: Dustin Alan Arvola
Publisher:
ISBN:
Category :
Languages : en
Pages : 153
Book Description
"The goal of this research project is to develop an industrially viable melting process that will control the crystallization macrostructure of austenitic grades of cast steels. Titanium nitride (TiN) has proven to be an effective grain refiner of austenite. Theoretical simulation and experimental application has led to the development of a repeatable grain refining melt process for austenitic stainless steel alloys. Grain refinement of the as-cast structure of Cr-Ni stainless steel alloys solidified with primary FCC, BCC and dual FCC/BCC phases was studied experimentally. Refinement was achieved in both cast ferritic and austenitic grades. Dual solidification of FCC/BCC phases resulted in an unrefined macrostructure. It is proposed that solidification sequence can limit the grain refining capability of heterogeneous nuclei. Two inoculation-based melt practices were developed to study grain refinement in cast austenitic stainless steels. The first includes in-situ formation of TiN on to Mg-Al spinel oxides, and the second involves master alloy additions containing preformed TiN. The master alloy method extended the equiaxed zone and improved the distribution of TiN in the casting. The in-situ method showed more effective grain size refinement. The effect of the developed grain refining melt practice on the properties of cast superaustenitic stainless steel (similar to CK3MCuN) was examined. Heat treatment had no effect on the as-cast grain size. The grain refined alloy exhibited a reduction in segregation after heat treatment; an increase in ultimate tensile strength (+11%), yield strength (+13%), ductility (+8%), hardness (+2%), pitting corrosion; a decrease in impact strength and intergranular corrosion rate in comparison to the unmodified, base alloy"--Abstract, page iv.
Grain Refinement of High Alloy Stainless Steels in Sand and Directionally Solidified Castings
Author: Dustin Alan Arvola
Publisher:
ISBN:
Category :
Languages : en
Pages : 153
Book Description
"The goal of this research project is to develop an industrially viable melting process that will control the crystallization macrostructure of austenitic grades of cast steels. Titanium nitride (TiN) has proven to be an effective grain refiner of austenite. Theoretical simulation and experimental application has led to the development of a repeatable grain refining melt process for austenitic stainless steel alloys. Grain refinement of the as-cast structure of Cr-Ni stainless steel alloys solidified with primary FCC, BCC and dual FCC/BCC phases was studied experimentally. Refinement was achieved in both cast ferritic and austenitic grades. Dual solidification of FCC/BCC phases resulted in an unrefined macrostructure. It is proposed that solidification sequence can limit the grain refining capability of heterogeneous nuclei. Two inoculation-based melt practices were developed to study grain refinement in cast austenitic stainless steels. The first includes in-situ formation of TiN on to Mg-Al spinel oxides, and the second involves master alloy additions containing preformed TiN. The master alloy method extended the equiaxed zone and improved the distribution of TiN in the casting. The in-situ method showed more effective grain size refinement. The effect of the developed grain refining melt practice on the properties of cast superaustenitic stainless steel (similar to CK3MCuN) was examined. Heat treatment had no effect on the as-cast grain size. The grain refined alloy exhibited a reduction in segregation after heat treatment; an increase in ultimate tensile strength (+11%), yield strength (+13%), ductility (+8%), hardness (+2%), pitting corrosion; a decrease in impact strength and intergranular corrosion rate in comparison to the unmodified, base alloy"--Abstract, page iv.
Publisher:
ISBN:
Category :
Languages : en
Pages : 153
Book Description
"The goal of this research project is to develop an industrially viable melting process that will control the crystallization macrostructure of austenitic grades of cast steels. Titanium nitride (TiN) has proven to be an effective grain refiner of austenite. Theoretical simulation and experimental application has led to the development of a repeatable grain refining melt process for austenitic stainless steel alloys. Grain refinement of the as-cast structure of Cr-Ni stainless steel alloys solidified with primary FCC, BCC and dual FCC/BCC phases was studied experimentally. Refinement was achieved in both cast ferritic and austenitic grades. Dual solidification of FCC/BCC phases resulted in an unrefined macrostructure. It is proposed that solidification sequence can limit the grain refining capability of heterogeneous nuclei. Two inoculation-based melt practices were developed to study grain refinement in cast austenitic stainless steels. The first includes in-situ formation of TiN on to Mg-Al spinel oxides, and the second involves master alloy additions containing preformed TiN. The master alloy method extended the equiaxed zone and improved the distribution of TiN in the casting. The in-situ method showed more effective grain size refinement. The effect of the developed grain refining melt practice on the properties of cast superaustenitic stainless steel (similar to CK3MCuN) was examined. Heat treatment had no effect on the as-cast grain size. The grain refined alloy exhibited a reduction in segregation after heat treatment; an increase in ultimate tensile strength (+11%), yield strength (+13%), ductility (+8%), hardness (+2%), pitting corrosion; a decrease in impact strength and intergranular corrosion rate in comparison to the unmodified, base alloy"--Abstract, page iv.
REWAS 2022: Developing Tomorrow’s Technical Cycles (Volume I)
Author: Adamantia Lazou
Publisher: Springer Nature
ISBN: 3030925633
Category : Technology & Engineering
Languages : en
Pages : 774
Book Description
The 7th installment of the REWAS conference series held at the TMS Annual Meeting& Exhibition focuses on developing tomorrow’s technical cycles. The papers in thiscollection explore the latest technical and societal developments enabling sustainabilitywithin our global economy with an emphasis on recycling and waste management. The2022 collection includes contributions from the following symposia: • Coupling Metallurgy and Sustainability: An EPD Symposium in Honor of Diran Apelian• Recovering the Unrecoverable• Sustainable Production and Development Perspectives• Automation and Digitalization for Advanced Manufacturing• Decarbonizing the Materials Industry
Publisher: Springer Nature
ISBN: 3030925633
Category : Technology & Engineering
Languages : en
Pages : 774
Book Description
The 7th installment of the REWAS conference series held at the TMS Annual Meeting& Exhibition focuses on developing tomorrow’s technical cycles. The papers in thiscollection explore the latest technical and societal developments enabling sustainabilitywithin our global economy with an emphasis on recycling and waste management. The2022 collection includes contributions from the following symposia: • Coupling Metallurgy and Sustainability: An EPD Symposium in Honor of Diran Apelian• Recovering the Unrecoverable• Sustainable Production and Development Perspectives• Automation and Digitalization for Advanced Manufacturing• Decarbonizing the Materials Industry
The Solidification of Steel Castings
Author: Steel Founders' Society of America
Publisher:
ISBN:
Category : Solidification
Languages : en
Pages : 148
Book Description
Publisher:
ISBN:
Category : Solidification
Languages : en
Pages : 148
Book Description
Effect of Composition on Solidification and Grain Refinement in Stainless Steel Casting
Cast Metals Research Journal
The Mechanism of Grain Refinement of Sand-castings in Aluminium Alloys. By A. Cibula
Transactions of the American Foundrymen's Society
Author: American Foundrymen's Society
Publisher:
ISBN:
Category : Founding
Languages : en
Pages : 508
Book Description
Publisher:
ISBN:
Category : Founding
Languages : en
Pages : 508
Book Description
Scientific and Technical Aerospace Reports
The Engineer
Solidification and Casting of Metals
Author: University of Sheffield
Publisher:
ISBN:
Category : Founding
Languages : en
Pages : 586
Book Description
Publisher:
ISBN:
Category : Founding
Languages : en
Pages : 586
Book Description