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CV 黑鉛鑄鐵의 組織 및 性質에 미치는 Cu添加의 影響

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Alternative Title
Effects of Copper Addition on the Structure and Properties of Compacted Vermicular Graphite Cast Iron
Abstract
Mg-REM系 合金을 CV 黑鉛化劑로 添加한 CV 黑鉛鑄鐵의 組織과 그 性質에 미치는 合金元素로서의 Cu添加影響을 調査하였다.

Cu의 添加量이 2.0%까지 增加함에 따라 다음과 같은 結果를 얻엇다 :

첫째, Cu添加臺이 增加할수록 熔湯中의 5含量이 減少하였으며 殘留 Mg의 回收率은 增加

하였고, 黑鉛組織은 CV 黑鉛狀에서 球狀黑鉛狀으로 천이하는 傾向을 나타내었다.

둘째, Cu添加量이 1.2% 以上되면 基地組織은 완전히 pearlite化하며, 多量의 free carbide가

析出함을 알 수 있었다.

세째, Cu添加量이 增加함에 따라 常溫 및 高溫引張性質은 向上되었다.
The effects of copper. as an alloying element on the structure and properties of Compacted- Vermicular graphite cast iron which was treated with Mg-REM spheroidizer have been studied.

With the increase of copper content up to 2.0 wt.%, the following results were obtained:

First, the ratio of residual magnesium content in the as-cast iron has been found to be increased, possibly due to the decrease of sulfur content in the melt. Thus, the morphology of graphite in the as-cast iron has been foun4 to be more nodular type.

Second, the proportion of pearlite in the matrix has been found to be increased, however the matrix being pearlite with free carbide precipitates in the copper range of 1.2wt.% to 2.0wt.%..

Third, the tensile strength of the as-cast iron in the temperature up to 400℃ was increased.
The effects of copper. as an alloying element on the structure and properties of Compacted- Vermicular graphite cast iron which was treated with Mg-REM spheroidizer have been studied.

With the increase of copper content up to 2.0 wt.%, the following results were obtained:

First, the ratio of residual magnesium content in the as-cast iron has been found to be increased, possibly due to the decrease of sulfur content in the melt. Thus, the morphology of graphite in the as-cast iron has been foun4 to be more nodular type.

Second, the proportion of pearlite in the matrix has been found to be increased, however the matrix being pearlite with free carbide precipitates in the copper range of 1.2wt.% to 2.0wt.%..

Third, the tensile strength of the as-cast iron in the temperature up to 400℃ was increased.
Author(s)
金明鎬朴興日
Issued Date
1985
Type
Research Laboratory
URI
https://oak.ulsan.ac.kr/handle/2021.oak/4942
http://ulsan.dcollection.net/jsp/common/DcLoOrgPer.jsp?sItemId=000002025282
Alternative Author(s)
Kim,Myung-HoPark,Heoun-Il
Publisher
연구논문집
Language
kor
Rights
울산대학교 저작물은 저작권에 의해 보호받습니다.
Citation Volume
16
Citation Number
2
Citation Start Page
241
Citation End Page
248
Appears in Collections:
Research Laboratory > University of Ulsan Report
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