Zobrazeno 1 - 10
of 77
pro vyhledávání: '"Antti Kaijalainen"'
Publikováno v:
Metals, Vol 14, Iss 1, p 60 (2024)
The microstructure and mechanical properties of a low-alloy medium carbon steel (Fe-0.5C-0.9Mn-1Cr-0.16V, in wt.%) were investigated after rapid tempering and compared with a conventionally tempered counterpart. The conventional thermal cycle was per
Externí odkaz:
https://doaj.org/article/27d7477e17b64db4b194058c6576c7d2
Autor:
Sumit Ghosh, Pentti Kaikkonen, Vahid Javaheri, Antti Kaijalainen, Ilkka Miettunen, Mahesh Somani, Jukka Kömi, Sakari Pallaspuro
Publikováno v:
Journal of Materials Research and Technology, Vol 17, Iss , Pp 1390-1407 (2022)
The novel processing concept of direct quenching and partitioning (DQ&P) has been explored with a medium-carbon (0.4 wt.% C) steel to evaluate and optimize the processing route for excellent property combinations. New compositional design approach wa
Externí odkaz:
https://doaj.org/article/743424a5edb04d50a24a2be63951a6ea
Autor:
Henri Tervo, Antti Kaijalainen, Vahid Javaheri, Mohammed Ali, Tuomas Alatarvas, Mikko Mehtonen, Severi Anttila, Jukka Kömi
Publikováno v:
Metals, Vol 11, Iss 11, p 1783 (2021)
The presence of acicular ferrite (AF) in the heat-affected zone (HAZ) of steels used offshore is generally seen as beneficial for toughness. In this study, the effects of varying fractions of AF (0–49 vol.%) were assessed in the simulated, unaltere
Externí odkaz:
https://doaj.org/article/a42191fff658487795aa8fbfd5f14780
Autor:
Henri Tervo, Antti Kaijalainen, Vahid Javaheri, Satish Kolli, Tuomas Alatarvas, Severi Anttila, Jukka Kömi
Publikováno v:
Metals, Vol 10, Iss 8, p 1096 (2020)
Deterioration of the toughness in heat-affected zones (HAZs) due to the thermal cycles caused by welding is a known problem in offshore steels. Acicular ferrite (AF) in the HAZ is generally considered beneficial regarding the toughness. Three experim
Externí odkaz:
https://doaj.org/article/ff4ebb93bd944e00b5299d8b2ce54cab
Publikováno v:
Metals, Vol 10, Iss 6, p 807 (2020)
This paper focuses on understanding the effect of niobium content on the phase transformation behavior and resultant mechanical properties of thermomechanically rolled and direct-quenched low carbon steels containing 0.08 wt.% carbon. Investigated st
Externí odkaz:
https://doaj.org/article/d27003eaef4f42b7afb09be43cdc045e
Publikováno v:
Applied Sciences, Vol 10, Iss 1, p 344 (2020)
The effect of chromium content in the range of 1 wt.%−4 wt.% on the microstructure and mechanical properties of controlled-rolled and direct-quenched 12 mm thick low-carbon (0.04 wt.%) steel plates containing 0.06 wt.% Nb has been studied. In these
Externí odkaz:
https://doaj.org/article/186964a0f2be441c9ac58cdd505e534b
Autor:
Oskari Haiko, Antti Kaijalainen, Sakari Pallaspuro, Jaakko Hannula, David Porter, Tommi Liimatainen, Jukka Kömi
Publikováno v:
Applied Sciences, Vol 9, Iss 20, p 4231 (2019)
In this paper, the effects of different tempering temperatures on a recently developed ultrahigh-strength steel with 0.4 wt.% carbon content were studied. The steel is designed to be used in press-hardening for different wear applications, which requ
Externí odkaz:
https://doaj.org/article/5da372e6cac545f3a224e0df7a796634
Publikováno v:
Metals, Vol 9, Iss 3, p 350 (2019)
The direct quenching process is an energy- and resource-efficient process for making high-strength structural steels with good toughness, weldability, and bendability. This paper presents the results of an investigation into the effect of molybdenum
Externí odkaz:
https://doaj.org/article/a577f4a12e4a4ad7b76a844075e62964
Publikováno v:
Metals, Vol 9, Iss 2, p 256 (2019)
A new experimental steel containing in weight percent 0.3C-2.0Mn-0.5Si-1.0Al-2.2Cr and 0.3C-1.9Mn-1.0Si-1.0Cr was hot rolled in a laboratory rolling mill and directly quenched within the martensite start and finish temperature range. It was then part
Externí odkaz:
https://doaj.org/article/506696256f2a466e88f95a5d021dfab8
Autor:
Oskari Haiko, Sakari Pallaspuro, Vahid Javaheri, Pentti Kaikkonen, Sumit Ghosh, Kati Valtonen, Antti Kaijalainen, Jukka Kömi
Experimental steels, a direct-quenched and partitioned (DQP) steel and a carbide-free bainitic steel (CFB), were tested along with a commercial martensitic 500 HB grade wear resistant steel in high-stress abrasive conditions. The three steels had dif
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::084440aaa6842bbd515e94b840581b15
https://trepo.tuni.fi/handle/10024/148310
https://trepo.tuni.fi/handle/10024/148310
