I. V. Shvarts, Ya. V. Krylov, S. A. Nikiforov, A. I. Gorunov, A. Kh. Gilmutdinov
{"title":"Analysis of Microstructure and Hardness of Weld Spots during Laser-Acoustic Heating of Stainless Steel","authors":"I. V. Shvarts, Ya. V. Krylov, S. A. Nikiforov, A. I. Gorunov, A. Kh. Gilmutdinov","doi":"10.1134/S2075113325701655","DOIUrl":null,"url":null,"abstract":"<p><b>Abstract</b>—Laser-acoustic method of spot heating of stainless steel AISI 316L is under consideration. Equipment for carrying out experiments with and without the application of ultrasonic vibrations with a frequency of 40 kHz and a power of 100 W is developed. The microstructure of weld spots is analyzed based on the obtained optical images. A globular form of dendrites during processing with ultrasonic exposure is revealed in contrast to the columnar form of dendrites obtained during processing in the traditional way. An algorithm is developed for determining the percentage content of phase components of the obtained microstructure—austenite and the conventionally introduced “X” phase, which takes into account ferrite and other possible new formations in the structure of the weld spot. Comparative analysis shows that the content of the X-phase on the fusion line is almost the same, while in the central and mixed zones of the weld spot, its percentage content is 51 and 41% higher in the experiments carried out with ultrasonic exposure. The analysis shows an increase in the hardness of weld spots within 5%. A conclusion is made about the advisability of developing and using a laser-acoustic processing method.</p>","PeriodicalId":586,"journal":{"name":"Inorganic Materials: Applied Research","volume":"16 5","pages":"1534 - 1540"},"PeriodicalIF":0.3000,"publicationDate":"2025-09-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Inorganic Materials: Applied Research","FirstCategoryId":"1085","ListUrlMain":"https://link.springer.com/article/10.1134/S2075113325701655","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"MATERIALS SCIENCE, MULTIDISCIPLINARY","Score":null,"Total":0}
引用次数: 0
Abstract—Laser-acoustic method of spot heating of stainless steel AISI 316L is under consideration. Equipment for carrying out experiments with and without the application of ultrasonic vibrations with a frequency of 40 kHz and a power of 100 W is developed. The microstructure of weld spots is analyzed based on the obtained optical images. A globular form of dendrites during processing with ultrasonic exposure is revealed in contrast to the columnar form of dendrites obtained during processing in the traditional way. An algorithm is developed for determining the percentage content of phase components of the obtained microstructure—austenite and the conventionally introduced “X” phase, which takes into account ferrite and other possible new formations in the structure of the weld spot. Comparative analysis shows that the content of the X-phase on the fusion line is almost the same, while in the central and mixed zones of the weld spot, its percentage content is 51 and 41% higher in the experiments carried out with ultrasonic exposure. The analysis shows an increase in the hardness of weld spots within 5%. A conclusion is made about the advisability of developing and using a laser-acoustic processing method.
期刊介绍:
Inorganic Materials: Applied Research contains translations of research articles devoted to applied aspects of inorganic materials. Best articles are selected from four Russian periodicals: Materialovedenie, Perspektivnye Materialy, Fizika i Khimiya Obrabotki Materialov, and Voprosy Materialovedeniya and translated into English. The journal reports recent achievements in materials science: physical and chemical bases of materials science; effects of synergism in composite materials; computer simulations; creation of new materials (including carbon-based materials and ceramics, semiconductors, superconductors, composite materials, polymers, materials for nuclear engineering, materials for aircraft and space engineering, materials for quantum electronics, materials for electronics and optoelectronics, materials for nuclear and thermonuclear power engineering, radiation-hardened materials, materials for use in medicine, etc.); analytical techniques; structure–property relationships; nanostructures and nanotechnologies; advanced technologies; use of hydrogen in structural materials; and economic and environmental issues. The journal also considers engineering issues of materials processing with plasma, high-gradient crystallization, laser technology, and ultrasonic technology. Currently the journal does not accept direct submissions, but submissions to one of the source journals is possible.