scholarly journals Special Issue Tool Steels. Influence of Retained Austenite on the Toughness of lC-lSi-8Cr-2Mo Cold Work Die Steel.

DENKI-SEIKO ◽  
1993 ◽  
Vol 64 (3) ◽  
pp. 140-151 ◽  
Author(s):  
Yukinori Matsuda ◽  
Koh-ichi Sudoh
2015 ◽  
pp. 621-645

Tools steels are defined by their wear resistance, hardness, and durability which, in large part, is achieve by the presence of carbide-forming alloys such as chromium, molybdenum, tungsten, and vanadium. This chapter describes the alloying principles employed in various tool steels, including high-speed, water-hardening, shock-resistant, and hot and cold work tool steels. It discusses the influence of alloy design on the evolution of microstructure and properties during solidification, heat treating, and hardening operations. It also describes critical phase transformations and the effects of partitioning, precipitation, segregation, and retained austenite.


DENKI-SEIKO ◽  
1993 ◽  
Vol 64 (3) ◽  
pp. 131-139
Author(s):  
Nobuhiko Hirose ◽  
Seiji Yamamoto ◽  
Kunisuke Itakura
Keyword(s):  

2012 ◽  
Vol 567 ◽  
pp. 240-243 ◽  
Author(s):  
Liu Ho Chiu ◽  
Huan Chen Liao ◽  
Shou Chi Lin ◽  
Yeong Tsuen Pan ◽  
Horng Yih Liou

The carbide distribution and retained austenite effects in cold work tool steels on their wear behavior are studied using different quenching, tempering and cryogenic processes. Treated specimens were characterized using optical and scanning electron microscopy, hardness measurements, X-ray diffraction as well as wear tests in a block-on-roller method without lubrication. Beside primary carbides being large and non-uniformly distributed in the D2-B specimen, the weight losses of the D2-B specimen (62.4 HRC) quenched and tempered at 200°C was highest among all tested specimens due to substantial retained austenite in the tempered martensite matrix. With the aid of small and uniform dispersed carbides, the DC53 steel specimen (61.3 HRC) showed less weight loss and exhibited the best wear resistance. The weight loss from cryogenically treated specimens was lower than that of non-cryogenically treated one.


Alloy Digest ◽  
1974 ◽  
Vol 23 (9) ◽  

Abstract VASCO TUF is an air-hardening die steel ideally suited for cold-work applications requiring good toughness. It has better wear resistance than the shock-resisting tool steels. It achieves a maximum hardness of Rockwell C 58-60 when multiple tempered at 950 F: this means that it can also be used for warm-working applications without losing hardness. This datasheet provides information on composition, physical properties, hardness, and elasticity as well as fracture toughness. It also includes information on forming, heat treating, machining, joining, and surface treatment. Filing Code: TS-274. Producer or source: Teledyne Vasco.


2013 ◽  
Vol 662 ◽  
pp. 362-365
Author(s):  
Shao Hong Li ◽  
Xiao Chun Wu

The ledeburite carbides segregated seriously in solidification of Cr12 tool steels and the morphology is distributed in banding with fishbone shapes resulting in low toughness. Thus the tools are usually failure with tipping, fracture and collapse in services. A new high strength and high toughness tool steel was developed to adapt for the requirement of high strength materials forming. The thermodynamic theory and equilibrium principle of carbon as well as computer aided optimizing design are used in.


2014 ◽  
Vol 56 (2) ◽  
pp. 104-110 ◽  
Author(s):  
Polat Topuz ◽  
Eren Yılmaz ◽  
Emine Gündoğdu

Alloy Digest ◽  
2010 ◽  
Vol 59 (1) ◽  

Abstract Carpenter CTS-204P (Micro Melt 20-4) alloy is a highly wear- and corrosion-resistant, air-hardening martensitic cold-work stainless die steel produced using Carpenter’s Micro-Melt powder metallurgy process. The excellent wear resistance of the alloy is provided by a significant volume fraction of hard vanadium-rich carbides, while the outstanding corrosion resistance of the alloy is obtained as a result of the chromium-rich matrix. This datasheet provides information on composition, physical properties, hardness, and elasticity. It also includes information on corrosion and wear resistance as well as forming, heat treating, and machining. Filing Code: SS-1051. Producer or source: Carpenter Specialty Alloys.


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