Heat Treatment Effects on the Mechanical Properties and Microstructure of CPM-M4 Tool Steel PDF Download
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Author: Cody P. Fast
Publisher:
ISBN:
Category : Carbides
Languages : en
Pages : 77
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Book Description
Variations in heat treatments have significant effects on the microstructure of tool steels. For CPM-M4 tool steel, the changes in microstructure and mechanical properties were observed based off of variations in temperature. Five heat treatments with constant exposure time and variable austenitizing and tempering temperatures were performed on samples of the CPM-M4. During heat treatment, tool steels undergo microstructural transformations where carbides made up of primary alloying elements are created and grown while the surrounding matrix of material undergoes phase transformations. Using SEM, EBSD, and ImageJ analysis software, the phase fractions of the final microstructure for each treatment was quantified and compared. Changes in mechanical properties were assessed by macro- hardness and nanoindentation. Based on the data, a maximum hardness was achieved for samples with an austenization temperature of 2200°F and a tempering temperature of 925°F. This highest hardness did not correspond to the highest fraction of the hardened carbide and martensite phases. This is due to interactions between both the phases present in the matrix as well as the size and distribution of the carbides.
Author: Cody P. Fast
Publisher:
ISBN:
Category : Carbides
Languages : en
Pages : 77
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Book Description
Variations in heat treatments have significant effects on the microstructure of tool steels. For CPM-M4 tool steel, the changes in microstructure and mechanical properties were observed based off of variations in temperature. Five heat treatments with constant exposure time and variable austenitizing and tempering temperatures were performed on samples of the CPM-M4. During heat treatment, tool steels undergo microstructural transformations where carbides made up of primary alloying elements are created and grown while the surrounding matrix of material undergoes phase transformations. Using SEM, EBSD, and ImageJ analysis software, the phase fractions of the final microstructure for each treatment was quantified and compared. Changes in mechanical properties were assessed by macro- hardness and nanoindentation. Based on the data, a maximum hardness was achieved for samples with an austenization temperature of 2200°F and a tempering temperature of 925°F. This highest hardness did not correspond to the highest fraction of the hardened carbide and martensite phases. This is due to interactions between both the phases present in the matrix as well as the size and distribution of the carbides.
Author: Sidi Lian
Publisher:
ISBN:
Category : Blades
Languages : en
Pages : 84
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Book Description
CPM-M4 tool steel is a commonly used knife blade material due to its high strength and wear resistance. The goal of this thesis is to understand how heat treatment parameters affect blade performance and microstructure. Five heat treatments were applied to CPM-M4 steel by varying austenitizing and tempering temperatures. The microstructures were examined by optical microscopy, scanning electron microscopy and limited amounts of energy-dispersive X-ray spectroscopy. The carbide fraction, size, count, spacing and chemistry were characterized from the microstructural analysis. Blade performance was examined by hardness, 3-Point bend, impact, and CATRA (edgeretention) testing. The results show that the austenitizing temperature is a significant factor that affects all mechanical properties tested. The max load in 3-Point bend test increases with the carbides fraction that can be maximized by controlling austenitizing temperature. Both austenitizing temperature and tempering temperature have significant effects on the hardness. As for the impact performance, the impact toughness increases with the carbides density. Additionally, we can achieve comparatively high impact toughness in low austenitizing temperature without decreasing hardness through lowering the tempering teperature, because tempering temperature has no significant effect on impact toughness. The edge retention of CPM-M4 steel relates to its hardness. Harder materials can provide a better edge retention for knife blade.
Author: MFAROUK -Mohamed Farouk Ahmed
Publisher: MFAROUK - Mohamed Farouk Ahmed
ISBN: 9779055797
Category : Technology & Engineering
Languages : en
Pages : 152
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Book Description
This is study on tool steel pacification and heat-treatment for all type of wear resistance steel and specially our D3 steel. Supported with value review. This research “theoretical and experimental” in Effect of Heat-treatment “hardening temperature, tempering temperature, and cooling rate“ in the Mechanical property “Hardness”, and Microstructure transformation on Tool Steel, all type of wear resistance steel, and specially D3 steel. The research study heat-treatment for two pieces of D3 die steel "Working at cone pulleys for nail manufacture" to modify there mechanical properties. The classification its type, properties and set on condition effect on it was discussed. Two set of experiments were done one to determine the effect of austenitization temperature and tempering temperature on the mechanical properties "hardness" and another "the basic one" to discuses improving its mechanical properties from view of microstructure transformations "type, amount, and properties" for each heat-treatment stage. This study was APPROVED as my BS graduate project from Metallurgy Engineering Collage, Cairo University 2001, and published after addition in experimental review at 2018.
Author: Vladimir P.Eng Neykov
Publisher:
ISBN:
Category :
Languages : en
Pages :
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Author: Harry Brearley
Publisher:
ISBN:
Category : Steel
Languages : en
Pages : 188
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Book Description
Author: Peter Jurči
Publisher: MDPI
ISBN: 303650060X
Category : Science
Languages : en
Pages : 130
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Book Description
Steels and their heat treatment are still very important in modern industry because most industrial components are made from these materials. The proper choice of steel grades along with their suitable processing makes it possible to reduce the weight of the components, which is closely related to energy and fuel savings. This has decisive importance in branches such as the automotive, transport, consumer industries. A great number of novel heat- and surface-treatment techniques have been developed over the past three decades. These techniques involve, for example, vacuum treatment, sub-zero treatment, laser/electron beam surface hardening and alloying, low-pressure carburizing and nitriding, and physical vapour deposition. This Special Issue contains a collection of original research articles on not only advanced heat-treatment techniques—carburizing and sub-zero treatments—but also on the microstructure–property relationships in different ferrous alloys.
Author: Herbert James French
Publisher:
ISBN:
Category : Carbon steel
Languages : en
Pages : 38
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Author: Serhat Alyaz
Publisher:
ISBN:
Category : Manganese steel
Languages : en
Pages : 71
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Author: G. E. Hicho
Publisher:
ISBN:
Category :
Languages : en
Pages :
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Author: Federico Giolitti
Publisher:
ISBN:
Category : Steel
Languages : en
Pages : 392
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Book Description
