The Relationship between Fracture Toughness and Impact Toughness of High-Speed Wheel Steel at Room Temperature

Q3 Engineering

中国铁道科学 Pub Date : 2012-01-01 DOI:10.3969/J.ISSN.1001-4632.2012.01.14

Ren Xue-chong, Li Shengjun, Gao Kewei, Su Yanjing, Jiang Bo, Chen Gang, Z. Hai

引用次数: 1

Abstract

The fracture toughness of high-speed wheel steel was measured at room temperature through compact tension(CT) specimens heat-treated with different procedures.Charpy V-notched impact specimens were made from the CT specimens with different fracture toughness,respectively.Impact tests were carried out on impact specimens at room temperature.The fracture toughness as well as the fracture surface and microstructure of impact specimens were observed and analyzed.Results show that the fracture toughness increases linearly with the increasing of impact toughness.The fracture modes of both CT specimens and impact specimens are mainly cleavage fractures.The inclusions in wheel steel mainly are Ti(C,N) which have little effect on the fracture toughness and impact toughness at room temperature.

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高速车轮钢室温断裂韧性与冲击韧性的关系

采用不同热处理方法对高速车轮钢的致密拉伸试样进行了室温断裂韧性测试。将断裂韧性不同的CT试样分别制成夏比v形缺口冲击试样。在室温下对冲击试样进行了冲击试验。对冲击试样的断裂韧性、断口形貌和显微组织进行了观察和分析。结果表明，断裂韧性随冲击韧性的增加而线性增加。CT试样和冲击试样的断裂方式均以解理断裂为主。车轮钢中的夹杂物主要是Ti(C,N)，对车轮钢的断裂韧性和室温冲击韧性影响不大。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

中国铁道科学 Engineering-Mechanical Engineering

CiteScore

2.00

自引率

0.00%

发文量

3868

期刊介绍： China Railway Science (founded in 1979, a bimonthly journal) was founded by Academician Mao Yisheng and has grown up in the context of reform and opening up. This journal is dedicated to serving the modernisation of China's railways, promoting academic research and exchanges, showcasing scientific and technological innovations, and cultivating high-level talents. It has published a large number of original and innovative academic papers, which have had a far-reaching impact on the field of railway and urban rail transit, and has become an important academic exchange platform of China Railway Research Institute Group Co. The journal contains scientific papers, abstracts of doctoral dissertations, results briefs, scientific and technological information, covering theoretical research and practice in civil engineering, rolling stock, communication signals and other disciplines. According to the data of 2021, it has an outstanding performance in terms of literature volume and citations on China Knowledge Network and Wanfang Data Knowledge Service Platform. China Railway Science is included in many famous databases at home and abroad, including American Engineering Index (Ei Compendex), Chinese Core Journals, China Academic Journals Comprehensive Evaluation Database, China Journal Square Science and Technology Double-Effective Journals, CNKI Chinese Journals Full-Text Database, and Wanfang Data-Digital Journals Group, Cambridge Scientific Abstracts: Engineering and Technology, Japan Science and Technology Agency (JSTA) database, China Science Citation Database (CSCD), RCCSE China Authoritative Academic Journals A+, China's leading scientific and technical journals, China's top scientific and technical journals, China's top scientific and technical journals, China's science and technology core journals, VIP Chinese scientific and technical journals database, Science Abstracts of the United Kingdom (SAINSPEC) (SAINSPEC), Dutch Scopus database (Scopus), Russian Abstracts Journal (AJ), etc., which shows its important position and international influence in the academic world.