Study on Matrix Microstructure of Crankshaft  Made of 18Cr2Ni4WA Steel

田永奎; 张星; 孙奇

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Study on Matrix Microstructure of Crankshaft Made of 18Cr2Ni4WA Steel

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- Study on Matrix Microstructure of Crankshaft Made of 18Cr2Ni4WA Steel
- 18Cr2Ni4WA钢制曲轴基体组织分析
- Issue 4, Pages: 352-355(1999)
- 作者机构：
  
  1. 山西柴油机厂,山西,大同,037036
  2. 华北工学院材料工程系,山西,太原,030051
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Published：1999
- 稿件说明：
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田永奎, 张星, 孙奇. Study on Matrix Microstructure of Crankshaft Made of 18Cr2Ni4WA Steel[J]. 1999, (4): 352-355.
DOI：

田永奎, 张星, 孙奇. Study on Matrix Microstructure of Crankshaft Made of 18Cr2Ni4WA Steel[J]. 1999, (4): 352-355. DOI：

摘要

目的　研究提高１８Ｃｒ２Ｎｉ４ＷＡ钢制曲轴性能的途径．方法　通过实验对不同工艺１８Ｃｒ２Ｎｉ４ＷＡ钢的基体组织进行分析．结果　常规工艺处理的工件具有粒状贝氏体（Ｂｇ）＋粒状组织（Ｇｓ）的复合组织，而较快冷速可以避免粒状组织的出现．结论　由于Ｇｓ的强韧性明显低于Ｂｇ，故提高空冷淬火第一阶段的冷速可以提高曲轴的性能．

Abstract

Aim\ To study the way for improving properties of crankshaft made of 18Cr2Ni4WA steel. Methods\ The microstructures of various heat treated specimens made of 18Cr2Ni4WA steel are analysed with metallographical experiment. Results\ The microstructure of normal heat treated specimen is made up of granular bainnite(Bg) and granular structure (Gs). Granular structure is disappeared when specimen is cooled at higher rate. Conclusion\ Because strength and toughness of Gs are lower obviously than those of Bg

increasing the cooling rate in air quenching at the first stage can improve the properties of crankshaft.

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references

　康沫狂, 杨思品. 关于贝氏体形态及其分类问题[J]. 西北工业大学学报, 1990, (增刊): 84.

　张祖贤. 兵器黑色金属材料手册[M]. 北京: 兵器工业出版社, 1990. 209.

　俞德刚, 郑经红, 梁振峰等. 低中碳钢的中温块状铁素体组织[J]. 金属学报, 1983, 19(5): A369.

　方鸿生, 白秉哲, 郑秀峰等. 粒状贝氏体和粒状组织的形态与相变[J]. 金属学报, 1986, 22(4): A283.

　张明星, 康沫狂. 粒状贝氏体和粒状组织强韧化机制的研究[J]. 钢铁, 1993, 28(9): 51.

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