Formation of Graphite Phase in Powder Metallurgical Ultrahigh Carbon Steels with High Wear Resistance

2018 ◽  
Vol 20 (8) ◽  
pp. 1800002
Author(s):  
Liuliu Han ◽  
Yong Liu ◽  
Gang Chen ◽  
Kun Li ◽  
Jiawen Wang ◽  
...  
Keyword(s):  
Wear Resistance ◽  
Carbon Steels ◽  
High Wear Resistance ◽  
Graphite Phase

LUCEFIN GROUP 16MnCr5 (1.7131), 16MnCrS5 (1.7139)

Alloy Digest ◽  
2020 ◽  
Vol 69 (8) ◽  
Keyword(s):  
Wear Resistance ◽  
Fatigue Strength ◽  
Physical Properties ◽  
Tensile Properties ◽  
Heat Treating ◽  
High Wear Resistance ◽  
Medium Size ◽  
Case Hardening ◽  
Low Carbon

Abstract Lucefin Group 16MnCr5 and 16MnCrS5 are low-carbon, 1.2Mn-1Cr, alloy case-hardening steels that are used in the carburized or carbonitrided, and subsequently quench hardened and tempered condition. In general, these steels are used for small and medium size parts requiring high wear resistance and fatigue strength. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties. It also includes information on forming, heat treating, machining, and joining. Filing Code: SA-864. Producer or Source: Lucefin S.p.A.

AIR-4

Alloy Digest ◽  
1963 ◽  
Vol 12 (2) ◽  
Keyword(s):  
Wear Resistance ◽  
Physical Properties ◽  
Tool Steel ◽  
Heat Treating ◽  
High Wear Resistance ◽  
Bethlehem Steel Corporation ◽  
Steel Corporation ◽  
Machining Characteristics

Abstract BETHLEHEM AIR-4 is a medium alloy air-hardening tool steel having low deformation, high wear resistance and hardness, deep hardening properties and adequate toughness for severe service. It has excellent free-machining characteristics. This datasheet provides information on composition, physical properties, hardness, and elasticity. It also includes information on forming, heat treating, machining, and joining. Filing Code: TS-129. Producer or source: Bethlehem Steel Corporation.

BÖHLER M261 EXTRA

Alloy Digest ◽  
2015 ◽  
Vol 64 (12) ◽  
Keyword(s):  
Wear Resistance ◽  
Physical Properties ◽  
Compressive Stress ◽  
Precipitation Hardening ◽  
Heat Treating ◽  
Steel Grade ◽  
High Wear Resistance ◽  
Hardened Condition

Abstract Böhler (or Boehler) M261 Extra is a precipitation hardening steel grade for plastic molds with good machinability in the precipitation hardened condition. It is used in the processing of plastics by offering high compressive stress and high wear resistance. This datasheet provides information on composition, physical properties, hardness, and elasticity. It also includes information on heat treating and machining. Filing Code: TS-732. Producer or source: Böhler Edelstahl GmbH & Company KG. See also Alloy Digest TS-736, September 2016.

YSS HAP72

Alloy Digest ◽  
2019 ◽  
Vol 68 (10) ◽  
Keyword(s):  
Wear Resistance ◽  
High Temperature ◽  
Powder Metallurgy ◽  
Tool Steel ◽  
High Speed ◽  
High Wear Resistance ◽  
Bend Strength ◽  
Temperature Performance ◽  
Very High

Abstract YSS HAP72 is a powder metallurgy high-speed tool steel with a very high wear resistance. This datasheet provides information on composition, hardness, and bend strength. It also includes information on high temperature performance. Filing Code: TS-779. Producer or source: Hitachi Metals America Ltd.

FINKL WF-XTRA

Alloy Digest ◽  
2000 ◽  
Vol 49 (1) ◽  
Keyword(s):  
Fracture Toughness ◽  
Wear Resistance ◽  
Tensile Properties ◽  
Heat Treating ◽  
High Wear Resistance ◽  
Optimum Diameter ◽  
High Production ◽  
Operating Temperatures

Abstract Finkl WF-XTRA has high wear resistance while retaining moderate fracture toughness. The alloy is recommended for larger die blocks. The optimum diameter for hardenability is 838 mm (33 in.). It is appropriate for use in high-production hammers where die temperatures may be above average or in presses with moderately high operating temperatures. This datasheet provides information on composition, microstructure, hardness, and tensile properties as well as fracture toughness. It also includes information on heat treating, machining, and joining. Filing Code: TS-570. Producer or source: A. Finkl & Sons Company.

Effect of cluster-gradient architecture of nanostructured topocomposites on features of tribointeraction with heterophased material

2020 ◽  
pp. 130-135
Author(s):  
D.N. Korotaev ◽  
K.N. Poleshchenko ◽  
E.N. Eremin ◽  
E.E. Tarasov
Keyword(s):  
Wear Resistance ◽  
Titanium Alloy ◽  
Energy Dissipation ◽  
Phase Structure ◽  
Diffusion Processes ◽  
Structural Phase ◽  
High Wear Resistance ◽  
Wear Characteristics ◽  
And Diffusion

The wear resistance and wear characteristics of cluster-gradient architecture (CGA) nanostructured topocomposites are studied. The specifics of tribocontact interaction under microcutting conditions is considered. The reasons for retention of high wear resistance of this class of nanostructured topocomposites are studied. The mechanisms of energy dissipation from the tribocontact zone, due to the nanogeometry and the structural-phase structure of CGA topocomposites are analyzed. The role of triboactivated deformation and diffusion processes in providing increased wear resistance of carbide-based topocomposites is shown. They are tested under the conditions of blade processing of heat-resistant titanium alloy.

The effects of adding carbon nanotubes to the mechanical and tribological properties of a carbon fibre reinforced polyether ether ketone composite

2009 ◽  
Vol 223 (11) ◽  
pp. 2501-2507 ◽  
Author(s):  
J Li ◽  
L Q Zhang
Keyword(s):  
Carbon Nanotubes ◽  
Wear Resistance ◽  
Carbon Fibre ◽  
Vinyl Ester ◽  
High Wear Resistance ◽  
Compression Moulding ◽  
Mechanical And Tribological Properties ◽  
Polyether Ether Ketone ◽  
Carbon Nano Tubes ◽  
Ether Ketone

The main objective of this article is to develop a high wear resistance carbon fibre (CF)-reinforced polyether ether ketone composite with the addition of multi-wall carbon nano-tubes (MWCNT). These compounds were well mixed in a Haake batch mixer and compounded polymers were fabricated into sheets of known thickness by compression moulding. Samples were tested for wear resistance with respect to different concentrations of fillers. Wear resistance of a composite with 20 wt% of CF increases when MWCNT was introduced. The worn surface features have been examined using a scanning electron microscope (SEM). Photomicrographs of the worn surfaces revealed higher wear resistance with the addition of carbon nanotubes. Also better interfacial adhesion between carbon and vinyl ester in a carbon-reinforced vinyl ester composite was observed.

Enlarging the Temperature Range for Maximum Wear Resistance of TiNi Alloy Using a NTE Phase

2007 ◽  
Vol 539-543 ◽  
pp. 3261-3266 ◽  
Author(s):  
Iulian Radu ◽  
Dong Yang Li
Keyword(s):  
Wear Resistance ◽  
Thermal Expansion ◽  
Internal Stress ◽  
Frictional Heating ◽  
Negative Thermal Expansion ◽  
High Wear Resistance ◽  
Tini Alloy ◽  
Wear Loss ◽  
Second Phase ◽  
Temperature Range

The near-equiatomic TiNi alloy has been demonstrated to possess high wear resistance, which largely benefits from its pseudoelasticity (PE). However, the PE occurs only in a small temperature range, which makes the wear resistance of this alloy unstable as temperature changes, caused by environmental instability or frictional heating. Therefore, enlarging the working temperature of PE could considerably improve this alloy as a novel wear-resistant material. One possible approach is to develop a self-built temperature-dependent internal stress field by taking the advance of the difference in thermal expansion between the pseudoelastic matrix and a reinforcing phase. Such a T-dependent internal stress could adjust the martensitic transformation temperature to respond changes in environmental temperature so that the temperature range of PE could be enlarged, thus leading to a wide temperature range in which the minimum wear loss is retained. Research was conducted to investigate effects of an added second phase having a negative thermal expansion (NTE) coefficient on the wear resistance of a near-equiatomic TiNi alloy. It was demonstrated that the temperature range of this modified material in which the wear loss dropped was enlarged. In addition, the wear resistance of such a TiNi-matrix composite was on one order of magnitude higher than that of unmodified TiNi alloy.

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