scholarly journals DEVELOP THE COMPOSITION AND HEAT TREATMENT METHOD OF HIGH-STRENGTH STEEL TO IMPROVE THE WEAR RESISTANCE OF THE GRANITE CRUSHER ARMOR

Author(s):  
M.A. GURYEV ◽  
Q. ZHENG ◽  
A.M. GURYEV ◽  
B.D. LYGDENOV
MRS Advances ◽  
2015 ◽  
Vol 1 (17) ◽  
pp. 1137-1148 ◽  
Author(s):  
Yoshikazu Sakai ◽  
Takaaki Hibaru ◽  
Kiyoshi Miura ◽  
Akira Matsuo ◽  
Koushi Kawaguchi ◽  
...  

ABSTRACTOne of the authors developed the high strength and high conductivity Cu-24 wt% Ag alloy as a conductor material for high field magnets twenty years ago.Wire and sheet of the alloy have been used as a conductor material for pulsed magnets or resistive magnets of the high magnetic field facilities of each country. However, the alloy required large quantities of Ag addition to achieve high strength. The cost performance and workability of the alloy were not good for that. So, we investigated possibility of low Cu-Ag alloy for decreasing in material cost and improving in workability. We succeeded in the development of the Cu-6 wt% Ag alloy by the new heat treatment which is superior to the characteristic of the Cu-24 wt% Ag alloy even if the amount of Ag content is decreased in 1/4.At present, we make a lot of high field pulsed magnets by using the Cu-6 wt% Ag wire manufactured industrially, and do that magnetic field experiment and are getting good results at the ISSP, the university of Tokyo. We will talk about the characteristic, new heat treatment method and the manufacturing process of the conductor material for the Cu-6 wt% Ag alloy.


2011 ◽  
Vol 27 (5) ◽  
pp. 966-969 ◽  
Author(s):  
G B Lin ◽  
Z D Wang ◽  
M K Zhang ◽  
H Zhang ◽  
M Zhao

2021 ◽  
Vol 1035 ◽  
pp. 312-317
Author(s):  
Peng Qi ◽  
Bo Long Li ◽  
Tong Bo Wang ◽  
Lian Zhou ◽  
Zuo Ren Nie

The effects of the heat treatment process parameters on the microstructure and mechanical properties of a selective laser melted (SLMed) AlSi10Mg alloy were systematically investigated. The SLMed AlSi10Mg alloy was treated with T1 (180°C× 4h + air cooling) process, which had the microstructure of fine α-Al grains, fine Si phase, and nano-sized precipitations. The microhardness significantly increased to 150 HV, which is even higher than as-SLMed one (126 HV). The microhardness of SLMed AlSi10Mg alloy treated with T4 (540°C × 2h + water cooling) heat-treatment process significantly decreased to 62 HV due to the growth of α-Al grains, Si phase and the formation of β-AlFeSi phase. However, the microhardness and ultimate tensile strength of AlSi10Mg alloy treated with T6 (540°C × 2 h water cool + 180°C × 4 h air cool) process decreased to 91 HV, although the strengthening precipitation of Mg2Si phase formed. It indicates that the Mg2Si phase cannot compensate for the adverse effect of grain growth. It may provide the best potential heat treatment method for fabricating the high strength SLMed AlSi10Mg alloy.


2008 ◽  
Vol 575-578 ◽  
pp. 1170-1176
Author(s):  
Tae Hoon Song ◽  
Kwang Young Lee ◽  
Sun Chul Huh ◽  
Won Jo Park

The Cam nose part of the Automobile's Cam shaft is strongly bumped with rocker arm or valve-lift. Therefore abnormal wear such as unfair-wear and early-wear occur in the surface. This abnormal wear causes a defect that bad timing open and close actions of the engine valve happen in the combustion chamber so the fuel gas will be combustion imperfect. Therefore, the Cam shaft has to be high hardness and wear resistance. In this study, high frequency heat treatment method was accomplished for wear test for material SM53C.


Alloy Digest ◽  
2014 ◽  
Vol 63 (3) ◽  

Abstract Swebor 400 (hardness 400 HBW) is a high-strength steel with good wear resistant qualities. This alloy is used to endure conditions of extra-heavy wear and when great strength and good weldability is required. This datasheet provides information on composition, hardness, tensile properties, and bend strength as well as fracture toughness. It also includes information on wear resistance as well as forming, machining, and joining. Filing Code: CS-181. Producer or source: Swebor Stål Svenska AB.


Carbon ◽  
2021 ◽  
Author(s):  
Kensuke Murashima ◽  
Yuki Kawashima ◽  
Shuhei Ozaki ◽  
Atsushi Tatami ◽  
Masamitsu Tachibana ◽  
...  

2021 ◽  
Vol 410 ◽  
pp. 37-41
Author(s):  
Natalia A. Astafeva ◽  
Andrey A. Balanovskiy ◽  
Anna A. Pershina

The article analyzes the results of a study of the influence of zonal heat treatment on the structure of welded joints of pipeline elements made of titanium alloys Ti-3.5Al-1.5Mn. In the manufacture of such structures, the TIG welding method is used to join pipe elements, after which the heat treatment method can be used to relieve residual stresses. The experiments have confirmed the effectiveness of zonal heat treatment preceded by welding. It was revealed that for welded joints made of titanium alloys, heat treatment can stabilize the structure. In experiments conducted by the method of optical metallography, the structure of heat treated and untreated welded joints was investigated. The influence of heat treatment on the weld structure and heat-affected zone was identified.


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