Evaluation of thermal aging activation energies based on multi-scale mechanical property tests for an austenitic stainless steel weld beads

Jeong, Chaewon; Kong, Byeong Seo; Shin, Ji Ho; Chen, Jun Jie; Xiao, Qian; Jang, Changheui

doi:10.1016/j.msea.2022.142629

Cited by 7 publications

(2 citation statements)

References 47 publications

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Section: Martensitic Matrix Compositesmentioning

confidence: 99%

“…Consequently, the addition of SiC affects the aging behaviour of MS. According to literature, the precipitation behaviour in maraging steel is strongly related to the activation energy for the growth of precipitates [194]. In order to calculate this activation energy, E , the so-called Augis-Bennett modified Kissinger equation was deduced as follows [195]: where T 0 is the initial temperature, T P is the exothermic peak temperature of the precipitates, α is the heating rate, R is the gas constant, and k is the reaction constant, whereby T 0 = 303 K and C = 8.31 J mol −1 K −1 .…”

Section: Microstructuresmentioning

confidence: 99%

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Feedstock preparation, microstructures and mechanical properties for laser-based additive manufacturing of steel matrix composites

Chen,

Kosiba,

Suryanarayana

et al. 2023

International Materials Reviews

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Laser-based additive manufacturing (LBAM) has shown great potential in the development of new metallic materials, especially in the design and fabrication of metal matrix composites (MMCs). Steel matrix composites (SMCs) as one MMC-type, have been successfully additively manufactured with full density and good performance. This article reviews emerging studies of LBAM-fabricated SMCs, starting from the methods of feedstock preparation including respective merits and challenges. The mechanisms of phase transformation, grain growth and texture development of the steel matrix, as well as the precipitation of reinforcements during rapid solidification inherent to LBAM are demonstrated. Microstructural features of SMCs with different matrix (austenitic, martensitic, duplex and ferritic) and reinforcement types are discussed. The interrelationship between the composition and physical properties of the composite powder, microstructures and mechanical properties of SMCs are disclosed and the involved strengthening mechanisms are discussed. Lastly, conclusions and outlook focusing on emerging trends of LBAM-fabricated SMCs are presented.

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Section: Martensitic Matrix Compositesmentioning

confidence: 99%