scholarly journals Mechanical Properties and Microstructure Characterization of AISI “D2” and “O1” Cold Work Tool Steels

Metals ◽  
2019 ◽  
Vol 9 (11) ◽  
pp. 1169 ◽  
Author(s):  
Mohammed Algarni
Keyword(s):  
Mechanical Properties ◽  
Ductile Fracture ◽  
Tool Steel ◽  
Fracture Mode ◽  
Fracture Behavior ◽  
Cold Work ◽  
Compression Tests ◽  
Tool Steels ◽  
Sem Images ◽  
Aisi D2

This research analyzes the mechanical properties and fracture behavior of two cold work tool steels: AISI “D2” and “O1”. Tool steels are an economical and efficient solution for manufacturers due to their superior mechanical properties. Demand for tool steels is increasing yearly due to the growth in transportation production around the world. Nevertheless, AISI “D2” and “O1” (locally made) tool steels behave differently due to the varying content of their alloying elements. There is also a lack of information regarding their mechanical properties and behavior. Therefore, this study aimed to investigate the plasticity and ductile fracture behavior of “D2” and “O1” via several experimental tests. The tool steels’ behavior under monotonic quasi-static tensile and compression tests was analyzed. The results of the experimental work showed different plasticity behavior and ductile fracture among the two tool steels. Before fracture, clear necking appeared on “O1” tool steel, whereas no signs of necking occurred on “D2” tool steel. In addition, the fracture surface of “O1” tool steel showed cup–cone fracture mode, and “D2” tool steel showed a flat surface fracture mode. The dimple-like structures in scanning electron microscope (SEM) images revealed that both tool steels had a ductile fracture mode.

scholarly journals Multi-pass friction stirred clad welding of dissimilar joined AA6061 aluminium alloy and brass

2018 ◽  
Vol 12 (4) ◽  
pp. 4285-4299
Author(s):  
Nora Osman ◽  
Zainuddin Sajuri ◽  
Mohd Zaidi Omar
Keyword(s):  
Mechanical Properties ◽  
Tool Steel ◽  
Microstructural Analysis ◽  
Welding Process ◽  
Fusion Welding ◽  
Tool Steels ◽  
Aa6061 Aluminium Alloy ◽  
Aisi D2 ◽  
Semi Solid ◽  
Aisi D2 Tool Steel

Tool steels are commonly used to cut metal materials due to their distinctive hardness, resistance to abrasion and deformation. However, tool steels are difficult to be joined using conventional fusion welding process. In this study, a thixotropic property of metal was utilised to butt-join an AISI D2 tool steel by using uncommon direct partial re-melting (DPRM) method. A high frequency of induction heating is used to apply the DPRM method. From the recent study, there are many methods in achieving the globular microstructure with the success of semi-solid joining process. Though, very less information on the microstructural effect of semi-solid joining on the mechanical properties was reported. This study aims to analyse the effect of uniaxial force on the microstructural evolution and mechanical properties of the thixo-joint of D2 tool steel. The microstructural analysis showed the diffusion occurred between the grains of the thixo-joint sample with 2.5 N uniaxial force. The maximum strength of the thixo-joint sample with force was 652 MPa. This was slightly higher than the as-received sample and the thixo-joint sample without force. The average hardness value of the thixo-joint sample was 400 HV due to the transformation of ferrite to the metastable austenite.

scholarly journals Effect of uniaxial load on microstructure and mechanical properties of Thixo-joint AISI D2 tool steel

2019 ◽  
Vol 13 (2) ◽  
pp. 5006-5020 ◽  
Author(s):  
F. Adnan ◽  
Z. Sajuri ◽  
M. Z. Omar
Keyword(s):  
Mechanical Properties ◽  
Tool Steel ◽  
Microstructural Analysis ◽  
Welding Process ◽  
Fusion Welding ◽  
Tool Steels ◽  
Aisi D2 ◽  
Semi Solid ◽  
Aisi D2 Tool Steel ◽  
Microstructural Effect

Tool steels are commonly used to cut metal materials due to their distinctive hardness, resistance to abrasion and deformation. However, tool steels are difficult to be joined using conventional fusion welding process. In this study, a thixotropic property of metal was utilised to butt-join an AISI D2 tool steel by using uncommon direct partial re-melting (DPRM) method. A high frequency of induction heating is used to apply the DPRM method. From the recent study, there are many methods in achieving the globular microstructure with the success of semi-solid joining process. Though, very less information on the microstructural effect of semi-solid joining on the mechanical properties was reported. This study aims to analyse the effect of uniaxial force on the microstructural evolution and mechanical properties of the thixo-joint of D2 tool steel. The microstructural analysis showed the diffusion occurred between the grains of the thixo-joint sample with 2.5 N uniaxial force. The maximum strength of the thixo-joint sample with force was 652 MPa. This was slightly higher than the as-received sample and the thixo-joint sample without force. The average hardness value of the thixo-joint sample was 400 HV due to the transformation of ferrite to the metastable austenite.

LUKENS TOOL STEELS

Alloy Digest ◽  
1997 ◽  
Vol 46 (2) ◽  
Keyword(s):  
Tool Steel ◽  
Cold Work ◽  
Tool Steels ◽  
Steel Company ◽  
Full Size ◽  
Heat Treated

Abstract Lukens cold-work tool steels A2, D2, O1, S5, and S7 are used in applications where an air-hardening, oil-hardening, or shock-resisting tool steel is required. These steels are available in full-size, annealed plates suitable for saw cutting and/or finishing. Parts can subsequently be machined and heat treated to a range of hardness requirements. For improved internal cleanliness, all Lukens cold-work tool steels are produced with maximum sulfur levels of 0.010%. This datasheet provides information on composition. It also includes information on machining and joining. Filing Code: TS-550. Producer or source: Lukens Steel Company.

The effectiveness of coatings when turning hardened cold work tool steel AISI D2 (60 HRC)

2008 ◽  
Vol 4 (1) ◽  
pp. 63
Author(s):  
Ahmad Kamely Mohamad ◽  
Noordin Mohd Yusof ◽  
Ali Ourdjini ◽  
Vellore Chelvaraj Venkatesh
Keyword(s):  
Tool Steel ◽  
Cold Work ◽  
Aisi D2 ◽  
Steel Aisi ◽  
Cold Work Tool Steel

Impact Properties of Vacuum Heat Treated AISI D2 and 8 % Cr Cold Work Tool Steels

2011 ◽  
pp. 129-145 ◽  
Author(s):  
Francisco Arieta ◽  
Eliana B. M. Netto ◽  
Afonso Reguly ◽  
W. K. Pannes ◽  
Uwe Beutler ◽  
...  
Keyword(s):  
Cold Work ◽  
Tool Steels ◽  
Impact Properties ◽  
Heat Treated ◽  
Aisi D2

Impact Properties of Vacuum Heat Treated AISI D2 and 8 % Cr Cold Work Tool Steels

2011 ◽  
pp. 129-145 ◽  
Author(s):  
Francisco Arieta ◽  
Eliana B. M. Netto ◽  
Afonso Reguly ◽  
W. K. Pannes ◽  
Uwe Beutler ◽  
...  
Keyword(s):  
Cold Work ◽  
Tool Steels ◽  
Impact Properties ◽  
Heat Treated ◽  
Aisi D2

Determining Ms temperature on a AISI D2 cold work tool steel using magnetic Barkhausen noise

2013 ◽  
Vol 577 ◽  
pp. S726-S730 ◽  
Author(s):  
Edgar Apaza Huallpa ◽  
J. Capó Sánchez ◽  
L.R. Padovese ◽  
Hélio Goldenstein
Keyword(s):  
Tool Steel ◽  
Cold Work ◽  
Barkhausen Noise ◽  
Magnetic Barkhausen Noise ◽  
Aisi D2 ◽  
Cold Work Tool Steel

Characterization of Precipitate Distributions in Modified S5 Tool Steels

1997 ◽  
Vol 3 (S2) ◽  
pp. 691-692
Author(s):  
K.C. Hsieh ◽  
E.A. Kenik
Keyword(s):  
Mechanical Properties ◽  
Cooling Rate ◽  
Tool Steel ◽  
Heat Treatments ◽  
Tool Steels ◽  
Tempered Martensite ◽  
Microstructure And Mechanical Properties

There has been increasing interest from industry to characterize the different precipitate distributions in ferrous materials to account for different mechanical properties that are observed. For this study, two different heat treatments were chosen for the experimental S5 tool steel, modified to have 0.24 wt% C. Alloy S5-1 received 1 hour of austenitizing at 970°C, was quenched at rate of 140°C/s and tempered for 1 hour at 200°C. Alloy S5-2 received 40 minutes of austenitizing at 940°C, was quenched at rate of 16°C/s and tempered for 1 hour at 200 °C. In this relatively low hardenability steel, both S5-1 and S5-2 show mixed microstructures of tempered martensite and bainite (Fig. 1, 2). Not surprisingly, the slower cooling rate for S5-2 created an alloy with inferior microstructure and mechanical properties. Even though these differences in precipitate distributions, could not directly account for differences in mechanical properties, it is of interest to study how the different heat treatments affected the precipitate distributions in S5-1 and S5-2.

Determination of Surface and Hole Quality in Drilling of AISI D2 Cold Work Tool Steel Using MPMR, MARS and LSSVM

2014 ◽  
Vol 13 (04) ◽  
pp. 237-246 ◽  
Author(s):  
Pijush Samui
Keyword(s):  
Tool Steel ◽  
Cold Work ◽  
Cutting Speed ◽  
Least Square ◽  
Support Vector ◽  
Hole Quality ◽  
Aisi D2 ◽  
Cemented Carbide Drills ◽  
Coated Cemented Carbide ◽  
Cold Work Tool Steel

This paper adopts Minimax Probability Machine Regression (MPMR), Multivariate Adaptive Regression Spline (MARS), and Least Square Support Vector Machine (LSSVM) for prediction of surface and hole quality in drilling of AISI D2 cold work tool steel with uncoated titanium nitride (TiN) and titanium aluminum nitride (TiAlN) monolayer- and TiAlN/TiN multilayer-coated-cemented carbide drills. MPMR is a probabilistic model. MARS is a nonparametric regression technique. LSSVM is developed based on statistical learning algorithm. Cutting tool (t), Feed rate (fr)(mm/rev), and Cutting speed (v)(m/min) have been adopted as inputs of MPMR, MARS, and LSSVM. The output of MPMR, MARS, and LSSVM is Surface roughness (rs) (μm) and Roundness error (re) (μm). A comparative study has been presented between the developed models. The results show that the developed model gives excellent performance.

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