Results 91 to 100 of about 388,680 (332)

Log Calculation Method of Horizontal In-Situ Stress in BH Complex Fault Block Oilfield

Cejing jishu
The magnitude and direction of in-situ stress has great significance to oil and gas exploration & development engineering, and the accurate calculation of horizontal in-situ stress is the key. The fault structure is developed in Bohai oilfield, the state
WANG Miao, LIU Xiaojian, SU Wen, XIA Hongquan, HU Nan, LAI Liliang   +5 more
doaj   +1 more source

Inversion Method of Initial In Situ Stress Field Based on BP Neural Network and Applying Loads to Unit Body

Advances in Civil Engineering, 2020
The initial in situ stress field is the fundamental factor causing the deformation and failure of underground engineering and is an important basis for the feasibility analysis, design, and construction of underground engineering.
Xiaopeng Li, Xuejun Zhou, Zhengxuan Xu, Tao Feng, Dong Wang, Jianhui Deng, Guangze Zhang, Cunbao Li, Gan Feng, Ru Zhang, Zhilong Zhang, Zetian Zhang   +11 more
doaj   +1 more source

Laser Metal Deposition of Aluminum Alloys 7075 and 5083 with the Addition of Volatile Alloying Elements through Powder Blending

Advanced Engineering Materials, EarlyView.
This study investigates laser metal deposition of aluminum alloys EN AW‐7075 and EN AW‐5083, using powder blending to compensate zinc and magnesium evaporation. In situ alloying and ex situ alloying with ZnAl12 and AZ91 preserve near‐standard compositions and improve mechanical properties.
Finn Bendixen, Anastasiya Toenjes, Annika Bohlen, Thomas Seefeld   +3 more
wiley   +1 more source

Direct imaging of short-range order and its impact on deformation in Ti-6Al. [PDF]

, 2019
Chemical short-range order (SRO) within a nominally single-phase solid solution is known to affect the mechanical properties of alloys. While SRO has been indirectly related to deformation, direct observation of the SRO domain structure, and its effects ...
Asta, Mark, Bustillo, Karen C, Chrzan, Daryl C, Deng, Yu, Minor, Andrew M, Morris, JW, Ophus, Colin, Ozdol, Burak, Traylor, Rachel, Vachhani, Shraddha J, Zhang, Ruopeng, Zhao, Shiteng   +11 more
core  

In situ observation of stress relaxation in epitaxial graphene [PDF]

, 2009
Upon cooling, branched line defects develop in epitaxial graphene grown at high temperature on Pt(111) and Ir(111). Using atomically resolved scanning tunneling microscopy we demonstrate that these defects are wrinkles in the graphene layer, i.e. stripes
, Alpha T N'Diaye, Antonio J Martínez-Galera, Bene Poelsema, Carsten Busse, Coraux J, Dirk Wall, Frank-J Meyer zu Heringdorf, Fujita D, Hattab H Meyer zu Heringdorf N'Diaye A T van Gastel R Coraux J Wall D Horn-von Hoegen M Poelsema B Busse C Michely T, Hichem Hattab, Jiang J-W, Johann Coraux, José M Gómez-Rodríguez, Loginova E, Michael Horn-von Hoegen, N'Diaye A T, N'Diaye A T, Raoul van Gastel, Sun G F, Thomas Michely   +20 more
core   +5 more sources

PBF‐LB/M of Ti‐6Al‐4V: High‐Pressure Solution Treatment and Aging for Applications in a Sustainable Aerospace

Advanced Engineering Materials, EarlyView.
Additive manufacturing (AM) allows great geometric freedom for lightweight components. As parts are progressively optimized exploiting potentials in AM leading in smaller material cross sections, high pressure solution treating and aging (STA) treatments show an enormous potential for strongly improving material properties.
Mika León Altmann, Andre Danzig, Freerk Syassen, Rainer Fechte‐Heinen, Anastasiya Toenjes   +4 more
wiley   +1 more source

Interaction between Molten Al‐Killed Mn–B Steel and Carbon‐Bonded MgO Refractories Based on Recyclates

Advanced Engineering Materials, EarlyView.
High‐temperature interactions between low‐sulfur Al‐killed Mn–B steel and MgO–C refractories (0 and 50 wt% recyclates) are studied via finger immersion tests (1600 °C). Surface‐active elements influence infiltration. MgO/CaS layer forms, along with spinel and calcium silicate.
Matheus Roberto Bellé, Lukas Neubert, Anton Yehorov, Till M. J. Stadtmüller, Christos G. Aneziris, Olena Volkova   +5 more
wiley   +1 more source

In-situ stress solution theory for borehole overcoring technique incorporating time-dependent effect of stress relief and its applications

International Journal of Mining Science and Technology
In-situ stress is a key parameter for underground mine design and rock stability analysis. The borehole overcoring technique is widely used for in-situ stress measurement, but the rheological recovery deformation of rocks after stress relief introduces ...
Daohong Xia, Shengjun Miao, Lianjun Chen, Yuan Li, Zejing Liu, Rongmin Zhang, Pengjin Yang, Pengcheng Li   +7 more
doaj   +1 more source

Tribological Performance of 60NiTi Alloy Under Varying Contact Conditions and Elevated Temperatures in Linear Reciprocating Sliding

Advanced Engineering Materials, EarlyView.
This study investigates the tribological response of 60NiTi alloy under dry, water‐lubricated and high‐temperature conditions. The alloy exhibits decreasing wear volume and friction with increasing temperature due to the formation of protective oxide layers. The work clarifies dominant wear mechanisms and demonstrates the suitability of 60NiTi for high‐
Anthony Onyebuchi Okoani, Miguel Angel Selles, Maziar Ramezani   +2 more
wiley   +1 more source

Laser Metal Powder Deposition of Titanium Microalloyed HSLA Steel FeC0.12Si0.25Mn1.3

Advanced Engineering Materials, EarlyView.
This study investigates the additive manufacturing of titanium‐doped high‐strength low‐alloy (HSLA) steel via laser metal deposition. It reveals distinct process‐structure relationships for elemental powder blends compared to prealloyed feedstocks.
Olaf Stelling, Matthias Steinbacher, Nils Ellendt   +2 more
wiley   +1 more source