TiC-maraging stainless steel composite: microstructure, mechanical and wear properties

Rare Metals ◽  
2006 ◽  
Vol 25 (6) ◽  
pp. 630-635 ◽  
Author(s):  
F AKHTAR ◽  
S GUO ◽  
P FENG ◽  
S KHADIJAHALI ◽  
A SYEDJAVID
Keyword(s):  
Stainless Steel ◽  
Wear Properties ◽  
Maraging Stainless Steel ◽  
Steel Composite ◽  
Composite Microstructure

Design of Electric Control System of Stainless Steel Composite Plate

2013 ◽  
Vol 706-708 ◽  
pp. 716-719
Author(s):  
Jian Chu ◽  
Gang Wang
Keyword(s):  
Stainless Steel ◽  
Control System ◽  
Composite Plate ◽  
Current Control ◽  
Equipment Operation ◽  
Electric Control ◽  
Control Scheme ◽  
Steel Composite ◽  
Machine Interface ◽  
Electrical Components

This paper mainly introduced to the PLC as the core of stainless steel composite plate electric control part of the design. The system uses the converter +PLC+ man-machine interface, as the major part of roll welding machine control, because of the use of the PLC, so that the system can improve the automatic level, electrical components is reduced, reduce failure rate, improve the reliability of equipment operation. Based on the current control and speed control, so that the welding quality and welding speed has been greatly improved. In the article, mainly from the production process, and the control system hardware and software design, and the control scheme to introduce several aspects.

scholarly journals Laser Cladding of Ni-Co-W Composite Coating on Stainless Steel to Enhance Wear Resistance

2021 ◽  
Author(s):  
Linlin ZHANG ◽  
Dawei ZHANG
Keyword(s):  
Stainless Steel ◽  
Wear Resistance ◽  
Composite Coating ◽  
Laser Cladding ◽  
Composite Coatings ◽  
Eutectic Structure ◽  
Wear Properties ◽  
Fine Grained ◽  
Noticeable Improvement ◽  
Enhance Wear Resistance

Ni-Co-W composite coatings modified by different contents of Co-based alloy powder in the Ni-based alloy with 35 wt.% WC (Ni35WC) were deposited on stainless steel by laser cladding. The influence of compositional and microstructural modification on the wear properties has been comparatively investigated by XRD, SEM, and EDS techniques. It was found that the austenite dendrites in the modified coating adding 50 wt.% Co-based alloy were refined and a lot of Cr23C6 or M23(C, B)6 compounds with fine lamellar feature were formed around austenitic grain boundaries or in the intergranular regions. The contribution of element Co to the modification of Ni35WC coating is that it cannot only promote the formation of more hard compounds to refine austenite grains, but also refine the size of precipitates, and change the phase type of eutectic structure as a result of disappeared Cr boride brittle phases. A noticeable improvement in wear resistance is obtained in the Ni35WC coating with 50 wt.% Co-based alloy, which makes the wear rate decreased by about 53 % and 30% by comparison to that of the substrate and the Ni35WC coating, respectively. It is suggested that the improvement is closely related to the composite coating being strengthened owing to the increase of coating hardness, formation of a fine-grained microstructure caused by Co, and fine hard precipitate phases in the eutectic structure.

Precipitation Behavior of a Maraging Stainless Steel

2012 ◽  
Vol 567 ◽  
pp. 92-95 ◽  
Author(s):  
Yue Jiang ◽  
Ying Ying Ai ◽  
Qi Ting Wang
Keyword(s):  
Stainless Steel ◽  
Treatment Process ◽  
Aging Treatment ◽  
Heat Treatment Process ◽  
New Materials ◽  
Precipitation Behavior ◽  
Thermo Calc Software ◽  
Calculation Results ◽  
Maraging Stainless Steel ◽  
Good Agreement

The changes of precipitation phases and matrix structures in Fe-13Cr-7Ni-4Mo-4Co-2W maraging stainless steel at different temperature were studied by using the Thermo-Calc software. The research was on the microstructures and precipitation behaviors of the maraging stainless steel, the performance is investigated through solution and aging treatment by TEMand SADP. The calculation results were in good agreement with the experiments, which demonstrated that when maraging stainless steel was treated in high temperature, the Laves-Fe2Mo precipitates became totally dissolved as the temperature was above 1050°C, and about 8% of R phase was found during aging. The calculation provides a guiding significant to the establishment of reasonable heat treatment process and the development of new materials.

Experimental Investigation of Copper/Stainless Steel Joints Formed by Vacuum Brazing

2010 ◽  
Author(s):  
Changqing Ye
Keyword(s):  
Stainless Steel ◽  
Copper Alloy ◽  
Filler Metal ◽  
Dissimilar Materials ◽  
Optical Microscope ◽  
Interface Zone ◽  
Vacuum Brazing ◽  
Bonded Joint ◽  
Steel Composite ◽  
Steel Joints

The article presents a study of two different brazing joints produced by dissimilar materials vacuum brazing. The junctions were obtained between copper or copper alloy and stainless steel. Different brazing parameters were used according to the different type of samples. By using optical microscope, scanning electron microscopy (SEM), energy dispersive X-ray spectroscopy (EDS) and micro-hardness machine to analyze the microstructure of copper or copper alloy/stainless steel vacuum brazing joins. The test results showed that copper (T2)/stainless steel (1Cr18Ni9Ti) dissimilar materials were successfully bonded together by means of the advanced vacuum brazing technology (the grade of filler metal was B-Ag72Cu). The interface zone of copper (T2)/stainless steel (1Cr18Ni9Ti) brazing bonded joint included the copper side interface, the middle brazing transition zone and stainless steel side. Some defects such as microfissures were also found in the brazing seam between copper alloy and stainless steel composite components obtained by vacuum brazing using B-AgCu21Pd25 filler metal. They are mainly due to the process and geometry parameters, such as temperature and clearance.

Processing Technology and Characteristic Evaluation of Polylactic Acid/316L Stainless Steel Composite Braids with Hydroxylapatite Deposition

2011 ◽  
Vol 332-334 ◽  
pp. 1951-1954 ◽  
Author(s):  
Jia Horng Lin ◽  
Wen Cheng Chen ◽  
Jin Jia Hu ◽  
Yueh Sheng Chen ◽  
Shih Peng Wen ◽  
...  
Keyword(s):  
Stainless Steel ◽  
Simulated Body Fluid ◽  
Polylactic Acid ◽  
Biodegradable Polymer ◽  
Body Fluid ◽  
316L Stainless Steel ◽  
Artificial Bone ◽  
Surgical Suture ◽  
Steel Composite ◽  
Apatite Deposition

Biodegradable polymer has been widely used in surgical suture, dressing, artificial bone and other bone-related applications. Studies have demonstrated that metals, such as titanium, titanium alloys or 316L stainless steel, can be widely used in dental and maxillofacial surgeries. The present study aimed to fabricate a scaffold with a blend of multilayer polylactic acid (PLA) ply yarns with 316L stainless steel (SS) braids, which was then immersed in simulated body fluid (SBF), forming the PLA/SS composite braid with hydroxylapatite deposition. After being immersed in SBF for 14 days, the PLA/SS composite braid was covered with precipitate which was confirmed to be apatite deposition according to surface observation and EDS evaluation.

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