强变形珠光体钢丝的微观组织特征

doi:10.13251/j.issn.0254-6051.2026.01.007

金属热处理 ›› 2026, Vol. 51 ›› Issue (1): 46-50.DOI: 10.13251/j.issn.0254-6051.2026.01.007

强变形珠光体钢丝的微观组织特征

顾苏怡¹, 王仁忠¹, 闵娜²

1.苏州市职业大学, 江苏苏州 215104;
2.上海大学分析测试中心, 上海 200444

收稿日期:2025-07-28 修回日期:2025-10-27 出版日期:2026-01-25 发布日期:2026-01-27
作者简介:顾苏怡(1978—),女,副教授,硕士,主要研究方向为工程材料的强变形行为,E-mail: gsy@jssvc.edu.cn
基金资助:
江苏省3C产品智能制造工程技术研究开发中心项目(201801000010);江苏省高等学校基础科学研究面上项目(23KJB430034)

Microstructure characteristics of severe drawn pearlitic steel wire

Gu Suyi¹, Wang Renzhong¹, Min Na²

1. Suzhou Vocational University, Suzhou Jiangsu 215104, China;
2. Instrumental Analysis and Research Center of Shanghai University, Shanghai 200444, China

Received:2025-07-28 Revised:2025-10-27 Online:2026-01-25 Published:2026-01-27

摘要/Abstract

摘要： 采用高分辨透射电镜分析了?0.65 mm的高碳强变形KSC92E珠光体钢丝的微观组织特征。结果表明,该钢丝珠光体层片间距平均厚度为47.0 nm。铁素体与渗碳体界面处存在大量位错,渗碳体内部碎化严重,存在大量新界面,被分割成许多细小的晶粒。位错在渗碳体的溶解过程中起着重要的作用,大量位错使得渗碳体片层局部出现错配及原子排布紊乱,导致渗碳体部分发生了变形分解。

关键词: 珠光体钢丝, 强变形, 铁素体, 渗碳体, 位错

Abstract: Microstructure characteristics of a ?0.65 mm high-carbon severe drawn KSC92E pearlite steel wire was analyzed by means of high resolution transmission electron microscopy (HRTEM). The results indicate that the average interlamellar spacing of the pearlite in the wire is 47.0 nm. A substantial quantity of dislocations is present at the ferrite-cementite interface. The cementite undergoes severe fragmentation, resulting in the formation of numerous new interfaces and being divided into a multitude of fine grains. Dislocations play a crucial role in the disslolution of cementite. The high dislocation density induces local lattice mismatch and atomic-scale disorider within the cementite lamellae, which promotes partial deformation-induced cementite dissolution.

Key words: pearlitic steel wire, severe drawn, ferrite, cementite, dislocation

中图分类号:

TG156.2

顾苏怡, 王仁忠, 闵娜. 强变形珠光体钢丝的微观组织特征[J]. 金属热处理, 2026, 51(1): 46-50.

Gu Suyi, Wang Renzhong, Min Na. Microstructure characteristics of severe drawn pearlitic steel wire[J]. Heat Treatment of Metals, 2026, 51(1): 46-50.

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强变形珠光体钢丝的微观组织特征

Microstructure characteristics of severe drawn pearlitic steel wire

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