Results 171 to 180 of about 510,005 (256)

Microstructural investigations on simulated intercritical heat-affected zone of boron modified P91-steel

Materials Science and Technology, 2020
Conventional P91 and boron modified P91-steels were considered in the present investigation. Using Gleeble, weld intercritical heat-affected zone (ICHAZ) was processed.
A. Khajuria, M. Akhtar, R. Bedi, Rajneesh Kumar, M. Ghosh, C. Das, S. Albert   +6 more
semanticscholar   +1 more source

Heat affected zone COD testing

Theoretical and Applied Fracture Mechanics, 1986
Abstract The paper focusses on additional COD test validity criteria which are seen as necessary to ensure the accurate assessment of heat affected zone toughness. Theoretical considerations indicate that it is necessary for the COD notch to intersect the heat affected zone for at least 8% of the specimen thickness in order to ensure accurate ...
G. Kohler, R. Whitfield, C. Chipperfield
openaire   +1 more source

Heat-Affected Zones in Grinding Steel

CIRP Annals, 1994
Summary Two well known forms of metallurgical damage of ground surfaces involve untempered and overtempered martensite. Both of these forms of metallurgical damage involve martensitic transformations. This paper reviews the nature of such transformations and the special characteristics that pertain in grinding where the time at temperature before ...
M.C. Shaw, A. Vyas
openaire   +1 more source

Effects of heat input on microstructure and fracture toughness of simulated coarse-grained heat affected zone for HSLA steels

Materials Characterization, 2019
In order to clarify the relationships among welding heat input, microstructural evolution and fracture toughness of coarse-grained heat affected zone (CGHAZ) for HSLA steels, the microstructure of simulated CGHAZ with heat input of 10–100 kJ/cm was ...
Xiaocong Yang, X. Di, Xiu-guo Liu, Dong-po Wang, Chengning Li   +4 more
semanticscholar   +1 more source

Influence of different heat-affected zone microstructures on the stress corrosion behavior and mechanism of high-strength low-alloy steel in a sulfurated marine atmosphere

Materials Science & Engineering: A, 2019
The stress corrosion cracking (SCC) behavior and mechanism of the simulated heat-affected zone (HAZ) of high-strength low-alloy (HSLA) steel in a sulfurated marine atmosphere were surveyed in detail using electrochemical measurements and slow strain rate
Wei Wu, Zhiyong Liu, Xiaogang Li, C. Du, Zhongyu Cui   +4 more
semanticscholar   +1 more source

The significant impact of introducing nanosize precipitates and decreased effective grain size on retention of high toughness of simulated heat affected zone (HAZ)

, 2020
The study of toughening mechanism associated with the heat-affected zone (HAZ) continues to be of significant interest for improving the low temperature (−40 °C) toughness. In this study, the effect of different heat input on microstructure, hardness and
J. Wang, Y. Shen, W. Xue, N. Jia, R. Misra   +4 more
semanticscholar   +1 more source

Influence of boron on microstructure and mechanical properties of Gleeble simulated heat-affected zone in P91 steel

, 2020
In the present endeavor, a Gleeble thermo-mechanical simulator has been used to simulate subzones of the heat-affected zone (HAZ) of boron-free P91 and boron-modified P91B steels to investigate the influence of boron on microstructure and mechanical ...
A. Khajuria, M. Akhtar, R. Bedi, Rajneesh Kumar, M. Ghosh, C. Das, S. Albert   +6 more
semanticscholar   +1 more source

Hydrogen environment assisted cracking in X70 welding heat-affected zone under a high-pressure hydrogen gas

Theoretical and applied fracture mechanics (Print), 2020
In this study, the susceptibility of API X70 weld joints to hydrogen gas was investigated using slow strain rate tensile (SSRT) tests. The microstructure of the subregion of the actual heat-affected zone (HAZ) weld joint was reproduced by weld thermal ...
T. Nguyen, Un Bong Beak, Jaeyeong Park, S. Nahm, N. Tak   +4 more
semanticscholar   +1 more source

Hardness Profiles of Quenched Steel Heat Affected Zones

Materials Science Forum, 2013
This paper reports the effects of chemical composition on the hardness of the heat affected zone of re-austenitized and water quenched steels. Heat affected zone peak temperatures in the range 300–1350 °C were simulated using a Gleeble 3800 simulator using thermal cycles appropriate to welds with cooling times between 800 and 500 °C of 12s. The maximum
S.J. Heikkilä, David A. Porter, L. Pentti Karjalainen, Risto O. Laitinen, S.A. Tihinen, Pasi Suikkanen   +5 more
openaire   +1 more source

Heat Affected Zone in Microwave Polymer Welding

Advanced Materials Research, 2016
This paper aims to present some specific aspects regarding the heat affected zone in microwave polymer welding. It presents several results of investigation of the physical and mechanical modification of the HDPE100 polymer when the microwave heating is applied.
Sorin Vasile Savu, Ionel Dănuț Savu, Gabriel Constantin Benga   +2 more
openaire   +1 more source