Results 21 to 30 of about 3,044 (204)

Advanced manufacturing technologies of large martensitic stainless steel castings with ultra low carbon and high cleanliness [PDF]

China Foundry, 2010
The key manufacturing technologies associated with composition, microstructure, mechanical properties, casting quality and key process control for large martensitic stainless steel castings are involved in this paper. The achievements fully satisfied the
Lou Yanchun, Zhang Zhongqiu
doaj  

Quenching Internal Stress Evolution and Shape Control in Gigapascal Ultra-High-Strength Martensitic Steel

Metals
Gigapascal ultra-high-strength steel holds significant applications in the energy and military sectors. Such steel is typically produced through quenching and tempering processes.
Zigang Chen, Yan Peng, Xinjun Shen, Xiaonan Wang, Hongyan Liu   +4 more
doaj   +1 more source

Property Optimization in As-Quenched Martensitic Steel by Molybdenum and Niobium Alloying

Metals, 2018
Niobium microalloying is the backbone of modern low-carbon high strength low alloy (HSLA) steel metallurgy, providing a favorable combination of strength and toughness by pronounced microstructural refinement. Molybdenum alloying is established in medium-
Hardy Mohrbacher
doaj   +1 more source

Relationships between Strength, Ductility and Fracture Toughness in a 0.33C Steel after Quenching and Partitioning (Q&P) Treatment

Crystals, 2023
The effect of quenching and partitioning (Q&P) processing on strength, ductility and fracture toughness is considered in a 0.33% C-1.8% Si-1.44 Mn-0.58% Cr steel. The steel was fully austenitized at 900 °C and quenched to 210 °C for 30 s. Partitioning at
Evgeniy Tkachev, Sergey Borisov, Yuliya Borisova, Tatiana Kniaziuk, Rustam Kaibyshev   +4 more
doaj   +1 more source

Ultra-high strength martensitic 420 stainless steel with high ductility

Additive Manufacturing, 2019
Abstract Martensitic 420 stainless steel was successfully fabricated by Selective laser melting (SLM) with >99% relative density and high mechanical strength of 1670 MPa, yield strength of 600 MPa and elongation of 3.5%. X-ray diffraction (XRD) and scanning electron microscopy disclosed that the microstructure of SLM 420 consisted of colonies of 0.5 ...
Kamran Saeidi, Daniel Leon Zapata, Frantisek Lofaj, Lenka Kvetkova, Jon Olsen, Zhijian Shen, Farid Akhtar   +6 more
openaire   +1 more source

The Effects of TIG Welding Rod Compositions on Microstructural and Mechanical Properties of Dissimilar AISI 304L and 420 Stainless Steel Welds

Metals, 2018
The usage of AISI/SAE 304L austenitic and 420 martensitic stainless steels is receiving greater interest especially in the defence and navy industries.
Aziz Barış Başyiğit, Mustafa Gökhan Murat   +1 more
doaj   +1 more source

Effect of intercritical annealing and subsequent ageing on the microstructure and mechanical properties of a medium Ni–Mn low carbon steel

Journal of Materials Research and Technology, 2022
The aim of this research was to develop a medium Ni–Mn dual phase steel with a combination of relatively high strength and good formability for industrial applications.
Hamidreza Koohdar, Farshad Roshanzadeh, Nasim Nayebpashaee, Hamid Reza Jafarian   +3 more
doaj   +1 more source

Creating Ti–Fe α/β Alloys by Diffusion‐Driven Solid‐State Processing

Advanced Engineering Materials, EarlyView.
This study proposes making alloys containing fast diffusing elements that are difficult to produce by ingot metallurgy, by diffusion‐driven solid‐state HIP processing of elemental powders and low‐temperature homogenisation. Here, novel Fe‐Ti α–β alloys are formed having fine α–β lamellae, a small β prior grain size without significant intermetallics ...
Jiaqi Xu, Xun Zhang, Jack M. Donoghue, Albert D. Smith, Rahul Unnikrishnan, Rhys Thomas, Vahid Nekouie, Jie Luo, Dongchen Hu, Michael Preuss, Philip J. Withers   +10 more
wiley   +1 more source

Karl Popper and the Mechanisms of Hydrogen Embrittlement

Advanced Engineering Materials, EarlyView.
Representation of the beginning of loss of ductility rather than embrittlement. Small concentrations of hydrogen in a diffusible form within iron are well‐established to harm the mechanical integrity of steels. There are theories that attempt to explain the pernicious role of hydrogen.
H. K. D. H. Bhadeshia
wiley   +1 more source

Weldability of Al-Si Coated High Strength Martensitic Steel

Periodica Polytechnica Transportation Engineering, 2013
Martensitic high strength steel type of 22MnB5 is increasingly used in transport industries for safety components. Al-Si based coating layer is applied to the steel surface to prevent oxidation during hot stamping process.  The main objective of performed analyses is   to study the differences in formation of the surface AlSi layer related to ...
Eva Schmidová, Petr Hanus
openaire   +2 more sources