贺甜甜,熊毅,杨钢,杨沐鑫,包汉生,郭志强,陈正阁

• 1:河南科技大学材料科学与工程学院
• 2:燕山大学亚稳材料制备技术与科学国家重点实验室
• 3:钢铁研究总院结构材料研究所
• 4:中国人民解放军63883部队

摘要(Abstract)：

在650℃采用等径弯曲通道变形(ECAP)方法对原始组织为层片状珠光体的GCr15钢进行了Bc方式的多道次变形。采用透射电镜和洛氏硬度等实验方法,对不同道次下的组织特性和硬度进行了分析。结果表明:冷变形和温变形都能使渗碳体片层发生球化,但一道次温变形情况下渗碳体球化程度明显高于冷变形一道次,硬度值由原始态(层片状珠光体)的42 HRC分别降至38 HRC(冷变形)、27 HRC(温变形),温变形二道次后,铁素体基体接近等轴状,平均晶粒尺寸约为0.4μm,球化完全的渗碳体颗粒粒径约为0.1μm,硬度值由27 HRC(温变形一道次)增至32 HRC左右。

关键词(KeyWords)： GCr15钢;等径弯曲通道变形;珠光体;组织特性;硬度

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金项目(50801021);; 河南科技大学人才科学研究基金资助项目(07003);; 亚稳材料制备技术与科学国家重点实验室开放课题(200903)

作者(Author): 贺甜甜,熊毅,杨钢,杨沐鑫,包汉生,郭志强,陈正阁

DOI: 10.13289/j.issn.1009-6264.2011.08.019

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