Structural Features of Welded Joint of Medium-Carbon Chromium Steel Containing Metastable Austenite

被引:3
|
作者
Korobov Y.S. [1 ,2 ]
Pimenova O.V. [1 ]
Filippov M.A. [1 ]
Khadyev M.S. [1 ]
Ozerets N.N. [1 ]
Mikhailov S.B. [1 ]
Morozov S.O. [1 ]
Davydov Y.S. [1 ]
Razikov N.M. [1 ]
机构
[1] Ural Federal University, Yekaterinburg
[2] Mikheev Institute of Metal Physics, Ural Branch, Russian Academy of Sciences, Yekaterinburg
关键词
dissipative structure; electron microscopy; flux-cored wire; martensitic transformation under loading; metastable austenite; strain hardening; stress relaxation; TRIP effect; welded joints;
D O I
10.1134/S2075113320010220
中图分类号
学科分类号
摘要
Abstract: Phase transitions during crystallization and subsequent thermal and deformation effects under the influence of various mechanical loads in welded joints of the plates of medium carbon steel by a consumable electrode in shielding gases with a flux-cored wire based on Fe–C–Cr matrix are studied. The test results for weldability, abrasive wear resistance, and stress state formation and the results of metallographic, electron microscopic, and X-ray diffraction studies are analyzed. It is shown that the structure of welded seam consists of metastable austenite, δ-ferrite, and high-strength carbon–chromium martensite. Welded joints have a high capability of intense hardening under local deformation owing to the TRIP effect (transformation-induced plasticity). © 2020, Pleiades Publishing, Ltd.
引用
收藏
页码:132 / 139
页数:7
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