Improved mechanical properties by nanosize tungsten-molybdenum carbides in tungsten containing hot work die steels

2021 ◽  
Vol 812 ◽  
pp. 141140
Author(s):  
Riming Wu ◽  
Wei Li ◽  
Meng Chen ◽  
Shan Huang ◽  
Tao Hu
Keyword(s):  
Mechanical Properties ◽  
Die Steels ◽  
Molybdenum Carbides ◽  
Hot Work Die

scholarly journals Microstructural Stability and Softening Resistance of a Novel Hot-Work Die Steel

Crystals ◽  
2020 ◽  
Vol 10 (4) ◽  
pp. 238 ◽  
Author(s):  
Ningyu Du ◽  
Hongwei Liu ◽  
Paixian Fu ◽  
Hanghang Liu ◽  
Chen Sun ◽  
...  
Keyword(s):  
Dislocation Slip ◽  
Microstructural Stability ◽  
H13 Steel ◽  
Die Steel ◽  
Die Steels ◽  
Molybdenum Carbides ◽  
Transmission Electron ◽  
Service Period ◽  
Tempering Treatment ◽  
Hot Work Die

A novel hot-work die steel, named 5Cr5Mo2, was designed to obtain superior thermal stability. The proposed alloy is evaluated in terms of its hardness, microstructure, and tempering kinetics. Compared with the commonly used H13 steel, the softening resistance of the designed steel is superior. Based on SEM and transmission electron microscopy (TEM) observations, a higher abundance of fine molybdenum carbides precipitate in 5Cr5Mo2 steel. Strikingly, the coarseness rate of the carbides is also relatively low during the tempering treatment. Moreover, owing to their pinning effect on dislocation slip, the dislocation density of the 5Cr5Mo2 steel decreases more slowly than that of the H13 steel. Furthermore, a mathematical softening model was successfully deduced and verified by analyzing the tempering kinetics. This model can be used to predict the hardness evolution of the die steels during the service period at high temperature.

Research on Hot-Work Die Steel Used for Extrusion Wheel

2012 ◽  
Vol 482-484 ◽  
pp. 1611-1617
Author(s):  
Sheng Feng Wang ◽  
Hong Yu Liu ◽  
Peng Zhou
Keyword(s):  
Mechanical Properties ◽  
Heat Treatment ◽  
Thermal Fatigue ◽  
Treatment Process ◽  
Fatigue Tests ◽  
Heat Treatment Process ◽  
Die Steel ◽  
Die Steels ◽  
Treatment Processes ◽  
Hot Work Die

A set of new nitrogen-containing hot work die steels were designed. The best experimental steels and their heat treatment processes were optimized by microstructures, mechanical properties and thermal fatigue tests. The results show that the best compositions of V, Cr, N are 1.0 wt％, 3.75 wt％ and 0.01 wt％, respectively. The optimized heat treatment process is that quenching at 1080°C, first tempering at 550°C and second tempering at 530°C.

scholarly journals ON CARBIDES IN W-Cr-V HOT-WORK DIE STEELS

1958 ◽  
Vol 44 (12) ◽  
pp. 1378-1382 ◽  
Author(s):  
Tomo-o Sato ◽  
Taiji Nishizawa ◽  
Kousuke Murai
Keyword(s):  
Die Steels ◽  
Hot Work Die

Surface modification of die steels with B—Al-layers by thermal-chemical treatment

2021 ◽  
pp. 557-564
Author(s):  
N.S. Ulakhanov ◽  
U.L. Mishigdorzhiyn ◽  
A.G. Tikhonov ◽  
A.I. Shustov ◽  
A.S. Pyatykh
Keyword(s):  
Mechanical Properties ◽  
Wear Resistance ◽  
Surface Layer ◽  
Surface Modification ◽  
High Temperature ◽  
Chemical Treatment ◽  
Quality Parameters ◽  
Processing Temperature ◽  
Die Steels ◽  
Composite Layers

The effect of diffusion high-temperature boroaluminizing (HBA) on the mechanical properties and quality parameters of the surface layer of stamp steels 5KhNM and 3Kh2V8F is shown. An analysis of the microstructure and composition of diffusion composite layers obtained as a result of thermal-chemical treatment (TCT) is presented and the distribution of microhardness in these layers is studied depending on the formed borides and carbides. The influence of processing temperature modes of on the parameters of roughness was experimentally established and the wear resistance characteristics of the processed surfaces of the investigated materials were determined.

Application of Si in Tool and Die Steel

2013 ◽  
Vol 676 ◽  
pp. 35-39
Author(s):  
Shi Hong Huang ◽  
Ting Lei ◽  
Hong Xiao Chi ◽  
Dang Shen Ma
Keyword(s):  
Tool Steel ◽  
High Speed ◽  
Cold Working ◽  
Reference Value ◽  
Die Steel ◽  
Die Steels ◽  
Different Types ◽  
Hot Work Die

This paper analyzed the application status of Si in high speed tool steel, cold working die steel, hot work die steel and plastic die steel. On this basis, the effect of Si on the properties of different types of tool and dies steels is summarized. There is the certain reference value of the application of Si in tool and die steels.

Heat treatment and mechanical properties of die steels

1966 ◽  
Vol 8 (11) ◽  
pp. 925-929
Author(s):  
G. P. Alekseeva ◽  
M. F. Alekseenko
Keyword(s):  
Mechanical Properties ◽  
Heat Treatment ◽  
Die Steels

The Experimental Study on Friction and Wear Characteristics of 25Cr12Ni5Mo Hot Work Die Steels at High Temperature

2012 ◽  
Vol 157-158 ◽  
pp. 286-290
Author(s):  
Xing Guo Wang ◽  
Jiu Jun Xu
Keyword(s):  
High Temperature ◽  
Low Temperature ◽  
Abrasive Wear ◽  
Load Condition ◽  
Wear Loss ◽  
Die Steels ◽  
Low Load ◽  
Hot Work Die ◽  
Pin On Disk ◽  
Worn Surface

High temperature pin-on-disk tester heated by middle frequency induction was designed. Friction test of hot work die steels with the same composition treated under three different heat treatment conditions was carried out by the pin-on-disk tester at high temperature. The experimental temperature were 200°C、300°C、400°C、500°C, applied loads were 1kg、1.5kg、2kg、2.5kg, respectively, pin-on-disk circumrotating speed was 1000r/min for all the experiments. Morphology of worn surface and sub-surface structure were observed by optical microscope. Experimental results indicat that wear loss decrease with temperature increasing. Meanwhile, there are various growing rule under different loads, wear loss increase slightly under low load, but increase rapidly with load increasing, especially increment become larger at low temperature. Morphology of worn surface show that the two-body abrasive wear are mainly mechanism under low temperature and low load condition, oxidation wear and adherence abrasive wear are mainly mechanism under high temperature and high load condition.

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