Effect of Current Density on the Microstructure and Mechanical Properties of TiN/TiAlN Duplex Coating Deposited on SKH51 Steel

2010 ◽  
Vol 139-141 ◽  
pp. 402-405
Author(s):  
Ri Sheng Du ◽  
Ji Hua Peng ◽  
Xian Wen Liang ◽  
Jun Tian
Keyword(s):  
Mechanical Properties ◽  
Tool Steel ◽  
Current Density ◽  
Vickers Microhardness ◽  
Adhesion Force ◽  
Ion Plating ◽  
Duplex Coating ◽  
Microstructure And Mechanical Properties ◽  
Duplex Coatings ◽  
Peak Value

In this paper, the TiN/TiAlN duplex coatings were deposited on SKH51 tool steel by means of multi-arc ion plating. By means of SEM, Vickers microhardness tester and scratch tester, the effect of target current levels on the surface morphology and mechanical properties of TiN/TiAlN duplex coatings on SKH51 tool steel was studied. During deposition, the effect of target current on microstructure and mechanical properties is responsible for the number, energy of emission target particles and distribution of target droplets. It was found that the thickness and microhardness of coatings, and the number of droplets with diameter more than 2 m increased with target current increasing. The adhesion force between coating and substrate reaches a peak value of 40.5N at 70A. From application view, it is better to control the Ti-Al target current density at 9.88x10-3 A/mm2.

Effect of the austenitizing parameters on the microstructure and mechanical properties of 75Cr1 tool steel

2020 ◽  
Vol 785 ◽  
pp. 139331
Author(s):  
A. Verdiere ◽  
F. Castro Cerda ◽  
A. Béjar Llanes ◽  
J. Wu ◽  
L. Crebolder ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Tool Steel ◽  
Microstructure And Mechanical Properties

Effect of Current Density on the Composition and Mechanical Properties of Cr1-xAlxN Coating by Ion Arc Plating

2012 ◽  
Vol 557-559 ◽  
pp. 1971-1974
Author(s):  
Cheng Xi Wang ◽  
Ji Hua Peng ◽  
Xian Wen Liang ◽  
Jun Tian
Keyword(s):  
Mechanical Properties ◽  
Surface Morphology ◽  
Current Density ◽  
Adhesion Force ◽  
Atomic Ratio ◽  
Pure Metal ◽  
Metal Target ◽  
Micro Hardness ◽  
Al Content ◽  
Maximum Value

The Cr1-xAlxN coatings were deposited onto M2 tool steel using ion arc plating technique. The effect of current density on the surface morphology and mechanical properties of TiN/CrAlN coating was made. It was found that adjusting the pure metal target currents is not only to change the metal atomic ratio, but also to influence the surface morphology, their hardness and adhesion. The micro hardness Hv increases almost linearly with Al content of the coating in this study, and the Cr0.41Al0.59N coating reaches Hv 2950. The adhesion force between the coating and the substrate reaches maximum value 55N, when the [Al]/[Al+Cr] ratio is 0.44.

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.

scholarly journals Relationship between microstructure and mechanical properties of a 5% Cr tempered martensitic tool steel

2004 ◽  
Vol 387-389 ◽  
pp. 171-175 ◽  
Author(s):  
N. Mebarki ◽  
D. Delagnes ◽  
P. Lamesle ◽  
F. Delmas ◽  
C. Levaillant
Keyword(s):  
Mechanical Properties ◽  
Tool Steel ◽  
Microstructure And Mechanical Properties

Influence of number of ECAP passes on microstructure and mechanical properties of AZ31 magnesium alloy

2012 ◽  
Vol 57 (3) ◽  
pp. 711-717 ◽  
Author(s):  
K. Bryła ◽  
J. Dutkiewicz ◽  
L. Litynska-Dobrzynska ◽  
L.L. Rokhlin ◽  
P. Kurtyka
Keyword(s):  
Electron Microscopy ◽  
Mechanical Properties ◽  
Magnesium Alloy ◽  
Grain Refinement ◽  
Vickers Microhardness ◽  
Az31 Alloy ◽  
Az31 Magnesium Alloy ◽  
Angular Pressing ◽  
Microstructure And Mechanical Properties ◽  
Transmission Electron

The aim of this work was to investigate the influence of the number of equal channel angular pressing (ECAP) passes on the microstructure and mechanical properties of AZ31 magnesium alloy. The microstructure after two and four passes of ECAP at 423 and 523 K was investigated by means of optical and transmission electron microscopy. The mechanical properties were carried out using Vickers microhardness measurements and compression test. The grain refinement in AZ31 alloy was obtained using ECAP routes down to 1,5 μm at 423 K. Processes of dynamic recrystallization during ECAP were observed. It was found that a gradual decrease of grain size occurs with the increasing of number of ECAP passes. The grain refinement increases mechanical properties at ambient temperature, such as Vickers microhardness and compression strength proportionally to d-0.5.

On the Optimization of Microstructure and Mechanical Properties of CrWMn Tool Steel by Deep Cryogenic Treatment

2019 ◽  
Vol 90 (5) ◽  
pp. 1800523 ◽  
Author(s):  
Kaikai Wang ◽  
Kaixuan Gu ◽  
R. D. K. Misra ◽  
Liubiao Chen ◽  
Xuanzhi Liu ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Tool Steel ◽  
Cryogenic Treatment ◽  
Deep Cryogenic Treatment ◽  
Microstructure And Mechanical Properties
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