熔模铸造贝氏体铸钢组织的细化

程巨强

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熔模铸造贝氏体铸钢组织的细化
Microstructure Refinement of Bainite Casting Steel in Investment Casting
2005年第12期页码：735-737
纸质出版日期： 2005 ，
DOI：

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[1]程巨强.熔模铸造贝氏体铸钢组织的细化[J].特种铸造及有色合金,2005(12):735-737+702.

Cheng Juqiang. Microstructure Refinement of Bainite Casting Steel in Investment Casting[J]. Special Casting & Nonferrous Alloys, 2005,(12):735-737.
[1]程巨强.熔模铸造贝氏体铸钢组织的细化[J].特种铸造及有色合金,2005(12):735-737+702. DOI：

Cheng Juqiang. Microstructure Refinement of Bainite Casting Steel in Investment Casting[J]. Special Casting & Nonferrous Alloys, 2005,(12):735-737. DOI：

摘要

研究了微合金化元素RE、Ti和不同的热处理工艺对熔模铸造高强度贝氏体铸钢组织的影响。研究表明

熔模铸造贝氏体钢组织粗大

分别加入质量分数为0.06%的RE和Ti及正火前进行淬火高温回火预处理或直接采用超高温正火处理

可以有效地细化贝氏体钢的组织。分析了微合金化和热处理细化组织的机理。

Abstract

Effects of trace alloying element RE

Ti and different heat treatment methodes on microstructure of high-strength bainite casting steel in investment casting were researched.The results show that although bainite casting steel in investment casting possesses coarse microstructure

the microstructure of the bainite casting steel can be effectively refined through adding 0.06% RE and trace Ti alloying and quenching as well as high temperature tempering before normalizing or normalizing treatment at austenitizing temperature 1 000 ℃.The mechanism of refining microstructure by trace-alloying and heat treatment was analyzed.