scholarly journals The magnetic mechanical analysis of manganese steel

1921 ◽  
Vol 98 (692) ◽  
pp. 297-302 ◽  
Keyword(s):  
Mechanical Properties ◽  
Heat Treatment ◽  
Magnetic Properties ◽  
Chemical Analysis ◽  
Cold Water ◽  
Mechanical Analysis ◽  
Magnetic Behaviour ◽  
Manganese Steel

One of the most interesting alloys for the study of its magnetic properties is manganese steel. The following paper is an attempt to correlate some of the magnetic and mechanical properties of manganese steel, in the hope that as such data are circulated it will eventually be possible to interpret from the magnetic behaviour of steel what the mechanical properties will be. Six manganese steel rods supplied by one of the authors were drawn from the same source, 76 cm. long and 0·95 cm. in diameter, and used “as drawn.” These rods were marked 1, 2, 3, 4, 5, and 6 respectively. The chemical analysis was made on rod No. 4 and showed:— C................................1.25 per cent. Si................................ 0.43 „ Mn...............................12.20 „ The record for the heat treatment was as follows:—“ All six bars were treated at 1000° C. (five minutes), and then water-quenched in ordinary cold water. Nos. 1, 5 and 6 were then enclosed in an iron pipe welded over at the ends, and annealed. The time for cooling from 550° C. to 450° C. was about eight hours. As this treatment did not make the bars sufficiently magnetic they were again annealed at 500° C. (530° C.—475° C.) for sixty hours."

INFLUENCE THE QUENCHING AND TEMPERING ON THE MICROSTRUCTURE, MECHANICAL PROPERTIES AND SURFACE ROUGHNESS, OF MEDIUM CARBON STEEL

2018 ◽  
Vol 18 (1) ◽  
pp. 125-135
Author(s):  
Sattar H A Alfatlawi
Keyword(s):  
Mechanical Properties ◽  
Heat Treatment ◽  
Surface Roughness ◽  
Carbon Steel ◽  
Cold Water ◽  
Medium Carbon Steel ◽  
Medium Carbon ◽  
Heating And Cooling ◽  
Treatment Processes ◽  
Quenching And Tempering

One of ways to improve properties of materials without changing the product shape toobtain the desired engineering applications is heating and cooling under effect of controlledsequence of heat treatment. The main aim of this study was to investigate the effect ofheating and cooling on the surface roughness, microstructure and some selected propertiessuch as the hardness and impact strength of Medium Carbon Steel which treated at differenttypes of heat treatment processes. Heat treatment achieved in this work was respectively,heating, quenching and tempering. The specimens were heated to 850°C and left for 45minutes inside the furnace as a holding time at that temperature, then quenching process wasperformed in four types of quenching media (still air, cold water (2°C), oil and polymersolution), respectively. Thereafter, the samples were tempered at 200°C, 400°C, and 600°Cwith one hour as a soaking time for each temperature, then were all cooled by still air. Whenthe heat treatment process was completed, the surface roughness, hardness, impact strengthand microstructure tests were performed. The results showed a change and clearimprovement of surface roughness, mechanical properties and microstructure afterquenching was achieved, as well as the change that took place due to the increasingtoughness and ductility by reducing of brittleness of samples.

FAGERSTA D-950

Alloy Digest ◽  
1976 ◽  
Vol 25 (9) ◽  
Keyword(s):  
Mechanical Properties ◽  
Heat Treatment ◽  
Chemical Analysis ◽  
Physical Properties ◽  
High Speed ◽  
High Speed Steel ◽  
Heat Treating ◽  
Secondary Hardening ◽  
Excellent Response ◽  
Economic Considerations

Abstract FAGERSTA D-950 is a high-speed steel that combines economic considerations in a properly balanced chemical analysis. An optimum carbon-vanadium ratio provides a high attainable hardness along with good mechanical properties. Its wide hardening range and excellent response to secondary hardening is rather unique and can offer some advantages in heat treatment. This datasheet provides information on composition, physical properties, hardness, and elasticity. It also includes information on forming, heat treating, and machining. Filing Code: TS-307. Producer or source: Fagersta Steels Inc..

scholarly journals On the influence of low temperatures on the magnetic properties of alloys of iron with nickel and manganese

1921 ◽  
Vol 99 (698) ◽  
pp. 174-196 ◽  
Keyword(s):  
Magnetic Properties ◽  
Low Temperatures ◽  
Mechanical Treatment ◽  
Magnetic Behaviour ◽  
Manganese Steel ◽  
Manganese Alloy ◽  
Steel Alloys ◽  
The Subject ◽  
Iron Manganese ◽  
Insight Into

Since its discovery by one of us in 1883, the material now universally known as manganese steel, that is the iron-manganese alloy containing about 12 to 14 per cent. manganese and 1⋅10 to 1⋅25 per cent. carbon has, on account of its many remarkable properties, been the subject of many researches. 2. The investigation of its magnetic behaviour in connection with thermal and mechanical treatment has taken a prominent place among them, as this method of investigation, perhaps more than any other, promised to give an insight into the constitution of steel alloys, and accordingly to show how their properties might be influenced in any desired direction. Manganese steel has not only been important in itself, but by reason of the light it has thrown upon the laws relating generally to steel alloys.

The Study of Type Twin Annealing in High Mn Steel

2011 ◽  
Vol 148-149 ◽  
pp. 1085-1088
Author(s):  
Gholam Reza Razavi
Keyword(s):  
Mechanical Properties ◽  
Heat Treatment ◽  
Grain Size ◽  
Room Temperature ◽  
Twip Steel ◽  
Manganese Steel ◽  
High Manganese ◽  
High Manganese Steel ◽  
Twip Steels ◽  
Mn Steel

TWIP steels are high manganese steel (Mn: 17% - 35%) which are used for shaping car bodies. The structure of this kind of steels remains austenite even in room temperature. Due to low SFE (Stacking Fault Energy) twinning of grains is governing reformation mechanism in this kind of steels which strengthen TWIP steel. Regarding heat treatment influences on mechanical properties of TWIP steels, in this paper we discuss twinning phenomenon resulting from this kind of treatment. For this, following casting and hot rolling processes, we anneal the steel at 1100°C and different time cycles and study its microstructure using light microscope. The results showed that with decreasing grain size the number of twin annealing added And four types of annealing twin in the microstructure, in the end they all become one twin and then turn into grain.

scholarly journals THE CHARACTERISTICS OF Al-Si COATING ON STEEL 22MnB5 DEPENDING ON THE HEAT TREATMENT

2019 ◽  
Vol 59 (4) ◽  
pp. 352-358 ◽  
Author(s):  
Marie Kolaříková ◽  
Rostislav Chotěborský ◽  
Monika Hromasová ◽  
Miloslav Linda
Keyword(s):  
Mechanical Properties ◽  
Heat Treatment ◽  
Chemical Analysis ◽  
Forming Process ◽  
Brittle Coating ◽  
22Mnb5 Steel ◽  
Ebsd Method

The coating on the 22MnB5 steel is intended to protect it against oxidation during the forming process. This steel is hot-pressed. A preheating before the pressing and subsequent hardening in the tool affects the properties of the AlSi coating. This study summarizes the results of investigating the effect of heat treatment parameters on the formation of intermetallics in the AlSi coating. The chemical analysis of the coating was performed by the EDX and EBSD method and the mechanical properties were determined by the Hysitron TI 950 TriboIndenter™ system. The result of this study is that, due to a diffusion during the heat treatment, the brittle coating was transformed into a tougher phase.

Softening of High-Strength Steel for Laser Assisted Clinching

2014 ◽  
Vol 966-967 ◽  
pp. 617-627 ◽  
Author(s):  
Julia Osten ◽  
Paul Söllig ◽  
Michael Reich ◽  
Jan Kalich ◽  
Uwe Füssel ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Heat Treatment ◽  
Laser Heating ◽  
High Strength Steels ◽  
High Strength ◽  
Mechanical Analysis ◽  
Hardened Steel ◽  
The Press ◽  
Short Time ◽  
First Time

The conventional clinching of steels is currently limited to tensile strength less than 800 N/mm2 and to elongation at fracture more than 14 %. To realise the clinching of high-strength steels, the sheet can be heated locally at the joint, to improve ductility. Thereby the material characteristics outside the joint should be maintained. This could be achieved by means of short-time laser heating. The short-time tempering behaviour of press hardened steel 22MnB5 has been analysed. The mechanical properties during a short-time heat treatment were investigated by thermo-mechanical analysis in a deformation dilatometer. Thereby laser-assisted clinching shall be established and an efficient form-closed and force-closed connection shall be produced. As a result, the press hardened steel 22MnB5 could be clinched by laser assistance for the very first time.

Failure Analysis and Welding Repair for Water Wall Tube Crack of Supercritical Boiler

2014 ◽  
Vol 1004-1005 ◽  
pp. 1410-1414
Author(s):  
Xiang Feng Zheng ◽  
Yun Jian Jiang ◽  
Rong Gang Xue ◽  
Nan Wu ◽  
Wen Bin Li ◽  
...  
Keyword(s):  
Heat Treatment ◽  
Residual Stress ◽  
High Temperature ◽  
Chemical Analysis ◽  
Mechanical Analysis ◽  
Strength Degradation ◽  
High Temperature Strength ◽  
High Temperature Creep ◽  
Water Wall ◽  
Water Wall Tube

Through methods, such as microscope analysis, mechanical analysis, chemical analysis, metallography examination etc, the causes resulting in water wall tube cracking of the supercritical boiler have been analyzed. The result indicates this water wall tube cracking is the high temperature creep fracture. The higher tensile stress, microstructure aging and high temperature strength degradation are the primarily inducement of cracking failure. In welding tube, the measures of reducing residual stress, such as lower welding heat input, reducing thickness of welding layer, assigning reasonably heat treatment power, lengthening holding time and so on, were taken. The welding repair succeeded greatly.

Crystallization of MgO • Al2 • SiO2 • ZrO2 glasses

1986 ◽  
Vol 44 ◽  
pp. 440-441
Author(s):  
M. A. McCoy
Keyword(s):  
Mechanical Properties ◽  
Heat Treatment ◽  
Powder Processing ◽  
Glass Composition ◽  
Ceramic Powder ◽  
Transformation Toughening ◽  
Ceramic Powder Processing ◽  
Processing Techniques ◽  
Ceramic Matrices

Transformation toughening by ZrO2 inclusions in various ceramic matrices has led to improved mechanical properties in these materials. Although the processing of these materials usually involves standard ceramic powder processing techniques, an alternate method of producing ZrO2 particles involves the devtrification of a ZrO2-containing glass. In this study the effects of glass composition (ZrO2 concentration) and heat treatment on the morphology of the crystallization products in a MgO•Al2•SiO2•ZrO2 glass was investigated.

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