Modern Tool Steels for Long Life Time in Hot Stamping Application

Author(s):  
D. Wang ◽  
E. Meurisse ◽  
R. Rahn ◽  
I. Schruff
RSC Advances ◽  
2015 ◽  
Vol 5 (129) ◽  
pp. 106333-106338 ◽  
Author(s):  
Jun Li ◽  
Bang-Gui Liu

We achieve a powerful life-time expression of the Neel states for arbitrary parameters and show that for famous Fe adatom chains on Cu2N surface, 14 or 16 Fe adatoms are enough to obtain a long life-time for Neel state storage of information.


2010 ◽  
Vol 41 (1) ◽  
pp. 778 ◽  
Author(s):  
Tukaram K. Hatwar ◽  
Jeffrey P. Spindler ◽  
Marina Kondakova ◽  
David Giesen ◽  
Joseph Deaton ◽  
...  

2015 ◽  
Vol 86 (12) ◽  
pp. 1628-1635 ◽  
Author(s):  
Stephan Hafenstein ◽  
Ewald Werner ◽  
Jens Wilzer ◽  
Werner Theisen ◽  
Sebastian Weber ◽  
...  

RSC Advances ◽  
2017 ◽  
Vol 7 (46) ◽  
pp. 28940-28944 ◽  
Author(s):  
Qiongfang Hu ◽  
Xiaofan Huang ◽  
Yu Cui ◽  
Tengfa Luo ◽  
Xiaoping Tang ◽  
...  

SiO2-coated FeOx/ZSM-5 catalyst exhibited long life time to produce C2–C3 olefins and para-xylene in high yield.


Materials ◽  
2020 ◽  
Vol 13 (22) ◽  
pp. 5068
Author(s):  
Sungjong Choi ◽  
Hochan Kim ◽  
Jihyun Sung ◽  
Dongmok Lee ◽  
Jongdock Seo

We present a fundamental study on the development of trimming dies at room temperature for the hot-stamping process using directed energy deposition. Specimens of G and F materials were fabricated by machining 3D-printed blocks. The hardness of G-layered specimens was slightly higher than that of F-layered specimens, reaching approximately 700 HV at the surface. The G-layered specimens consisted of columnar and equiaxed dendrites, whereas the F-layered specimens mainly consisted of equiaxed dendrites. Spherical pores were observed inside the layered cross section, whereas relatively large irregular-shaped cavities were observed in layered boundaries. The tensile strengths of the G-layered and F-layered specimens were approximately 1800 and 1650 MPa, respectively. During bonding strength tests on an area bonded with S45C base metal, a fracture occurred in one case because of the lack of fusion at the boundary, and the F-layered specimens showed a lower strength than the G-layered ones. During wear tests on a quenched 1.5 GPa-grade aluminized steel plate, the F-layered specimens showed lower wear loss. However, the G-layered specimens showed better wear resistance during wear tests on a 1.5 GPa-grade electrogalvanized steel plate. These findings serve as fundamental data for additive manufacturing processes using tool steels of high-strength materials with high melting points.


RSC Advances ◽  
2019 ◽  
Vol 9 (55) ◽  
pp. 32047-32057 ◽  
Author(s):  
Hopmann Eric ◽  
Haizeng Li ◽  
Elezzabi Adulhakem Y.

A novel electrochromic energy storage device based on a long-lifetime DMSO-modified hydrogel electrolyte.


2016 ◽  
Vol 37 (7) ◽  
pp. 1458-1483 ◽  
Author(s):  
SIMON BIGGS ◽  
MICHAEL McGANN ◽  
DINA BOWMAN ◽  
HELEN KIMBERLEY

ABSTRACTHow to respond to an ageing society has become an increasingly important question, for employers, workers and policy makers. Here we critically engage with that debate, arguing that future approaches to the relationship between work and age should take into account multiple influences on older worker behaviour, including the combination of economic, lifecourse and personal priorities. We consider the international consensus that has emerged about the primacy of work as the solution to what to do with a long life. We then address the uncertain nature of work as it affects older workers, and discuss the commodification of time in relation to a productivist approach to demographic ageing and the attitudes of older workers themselves. A tension is noted between pressures for continuity and discontinuity within the adult lifecourse which is often eclipsed within a policy discourse that tends to focus on continuity as a route to social legitimacy. Thinking about life-time as a meta-narrative, a tension between existential life priorities and commodification, may help to explain the ease with which ‘live longer–work longer’ policies both dominate and obscure the potential of a long life. Finally, we examine the implications for work–life balance and suggest this needs to be radically re-thought when addressing the purpose of a longer working life and the promise of a long life in general.


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