文章信息/Info

Title:

Investigation on Anisotropic Microstructure and Mechanical Properties of 1050 Wheel Steel
 

作者:

張青松1; 李國棟2; 戴光澤1; 李秋澤2; 朱振宇1; 馮健1

（1. 西南交通大學 材料科學與工程學院，四川 成都 610031）
（2. 中車長春軌道客車股份有限公司 轉向架研發部，吉林 長春 130062）

Author(s):

 ZHANG Qingsong; DAI Guangze; Gao Jiewei; Zhu Zhenyu; Feng Jian

 （School of Material Science and Engineering, Southwest Jiaotong University, Chengdu 610031, China）

關鍵詞:

 ; 關鍵詞: 1050鋼; 軋制; 力學性能; 各向異性; 斷裂

DOI:

10.7502/j.issn.1674-3962.2017.06.10

文獻標志碼:

A

摘要:

 摘  要：本文研究了1050車輪鋼組織和力學性能的各向異性，對截取于經熱處理后的1050鋼冷軋棒材并與軋制方向成0°、30°、45°三個不同方向的標準圓棒拉伸試樣在室溫條件下進行拉伸試驗，以及0°、15°、30°、45°四個不同方向的標準Charpy-U型沖擊試樣的沖擊韌性試驗，并觀察斷口形貌。結果表明：隨著試樣與軋制方向角度的增加，顯微組織的均勻性逐漸變差；拉伸性能隨著試樣與軋制方向角度的增加而降低，其中屈服應力與抗拉強度下降比例分別為10.3%、7.4%，斷口都是韌性斷裂；沖擊韌性隨著試樣與軋制方向角度的增加而降低，沖擊吸收功下降的比例為27%。

Abstract:

This article investigated the anisotropic microstructure and mechanical properties of 1050 wheel steel. The tensile test for standard round bar specimens with 0°, 30° and 45°three different angles to rolling direction of cool rolling 1050 steel round bar after hot treatment were carried out at room temperature. And the impact toughness test for Charpy-U notched specimens with 0°, 15°, 30° and 45° four different angles to rolling direction were carried out at room temperature. The results showed that the homogeneity of microstructure decreased with increasing angle to rolling direction. The tensile properties decreased with increasing angle to rolling direction. The percentages of decline for yield strength and extension strength were 10.3% and 7.4% respectively and all fracture were ductile fracture. The impact toughness decreased with increasing angle to rolling direction and the percentages of decline for impact absorbing energy was 27%.