http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
- 中文 을 입력하시려면 zhongwen을 입력하시고 space를누르시면됩니다.
- 北京 을 입력하시려면 beijing을 입력하시고 space를 누르시면 됩니다.
RISS 인기검색어
- 검색키워드
- 저자 : 고형순 ( Go Hyung Soon ) (검색결과 2 건)
- 무료
- 기관 내 무료
- 유료
-
고형순 ( Go Hyung Soon ) 중부고고학회 2005 강원고고학보 Vol.4 No.0
한국 고대 철기 유물에 관한 제조공법과 기술을 고찰하고자 철기 유물의 미세조직 검토와 기계적 특성에 대한 연구를 수행하였다. 본 연구에 사용된 철제 유물들은 화살촉, 총통, 화약다지개와 같은 무기류에서부터 철준, 관정, 꺽쇠 도자, 철부 등 일상 생활용품이나 부품류에 이르는 다양한 종류에 해당된다. 이들 유물들은 나주 복암리, 양주대모산성, 경남 하동군 출토된 것으로써 제작시기도 삼국시대로부터 조선 시기에 이르는 폭넓은 시기에 걸쳐 만들어진 것으로 추정된다. 유물에서 일부를 채취 샘플링 하여 미세조직과 각 부분에 대한 성분 분석을 시행하였다. 성분 분석은 C/S 분석과 ICP 분석을 통해 미량 함유된 성분 원소까지 분석하였으며, 광학현미경, 주사전자현미경, 투과전자현미경을 통해 미세조직의 구성과 제조공정에 대한 검토를 수행하였다. 또한 유물에서 많이 관찰되는 비드만스퉤튼(Widmanstätten) 조직을 실험을 통하여 모사하여 성형 및 온도조건 등에 대한 제작과정을 검토하였다. 유물의 미세조직 구조는 그것의 제조 공법을 추정하게 하는 근거가 되는데, 이를 통해 악된 제조공정으로 침탄과 열처리 그리고 가공의 조건이 철제 유물류에 적용된 것으로 판단된다. 미세조직 구조는 비드만스퉤튼 구조, 과열조직, 그리고 침탄과 비침탄의 영역 및 가공과 관련한 재결정립과 연신된 조직으로 구분된다. 일부 지역에서는 탄소 함량이 극히 적어서 순철의 조직을 이루는 미세조직이 관찰되기도 하였다. 단조 가공이 진행된 지역에서는 미세한 재결정립들이 가공도에 따라 분포하며 침탄의 탄소 함량에 따라 표면 경화가 유발된 지역이 관찰된다. 냉각속도는 각 유물에 따라 달리 적용된 것으로 보여지는데, 이에 따라 비드만스퉤튼 구조 혹은 여러 상이 복합된 복합조직강과 같은 독특한 미세조직 구조가 관찰되었다. 철기 유물들의 미세조직과 화학성분 그리고 경, 강도 측정결과 유물들의 제조공정은 크게 몇 가지로 분류하였다. 성형과 가공 그리고 침탄과 열처리의 공정이 철기 제작 과정에 포함되며 각각의 공정들은 서로 복합적이고 유기적으로 연결되어 기계적 특성을 발휘한다. 제작 과정을 1. 성형, 2. 성형→가공, 3. 성형 →침탄→가공, 4. 성형→침탄→가공→열처리의 4단계로 나누어서 정리하였다. 이와 같은 철제유물의 미세조직 구조에 대해서는 아직 구체적으로 연구된 바가 없으며, 본 연구에서는 체계적인 미세조직의 분류를 통해 제조공정의 예측과 당시 철제 유물 제작 기술에 대한 금속공학적인 기술의 평가를 가하고자 하였다. This study was conducted on micro structure and mechanical characteristics of remains made of iron to consider their manufacturing process and technique. The subject of this study were various kinds of remains made of iron ranging from arms such as arrowheads, firearms, and rollers for gunpowder to commodities or artifacts like iron spearhead hanger, iron coffin nails, corner braces, hand knives, iron axes. These remains were excavated from the ruins of Naju Bokam-ri, Yangju Daemo Fort, and Kyeongnam Hadong-gun and supposed to be made throughout the period of the Three States and Choseon Dynasty. Some of the remains were sampled and their micro structure and elements of each part were analyzed. Through C/S analysis and ICP analysis, even microelements were analyzed, and optical microscope, scanning electron microscope, and transmission electron microscope were used to review composition of micro structure and manufacturing process. In addition, Widmanstätten structure seen a lot in remains was copied to examine the manufacturing process of shape-forming and temperature condition. The composition of micro structure of remains was the foundation to estimate their manufacturing process. As a result of analyzing the composition, it was judged that processes like carburizing, heat treatment and processing were applied to manufacture iron artifacts. The composition of micro structure was classified into Widmanstätten structure, overheated structure, structure drafted from recrystallized fractions related to carburizing, heat treatment and processing. In some areas, micro structure which formed pure iron was seen because of little carbon content. In areas where forging process was developed, micro recrystallized fractions were distributed depending on the degree of processing, and surface hardening was induced by carbon content in carburizing in some areas. It was considered that cooling rate was different by each relic, so this researcher could observe Widmanstätten structure and unique composition of micro structure like complex structure where various phases were mixed. As a result of surveying the micro structure of remains made of iron, chemical elements, and the degree of hardness and intensity, the manufacturing process of remains was divided into several steps. Shape-forming, processing, carburizing and heat treatment were included in the manufacturing process of iron artifacts, and each process was so connected with each other complexly and organically that mechanical characteristics were shown. The manufacturing process was divided into 4 steps as follows: 1. shape-forming, 2, shape-forming → processing, 3. shape-forming → carburizing → processing, 4. shape-forming → carburizing → processing → heat treatment. Concrete studies on the above-mentioned micro structure of iron remains have not been conducted yet, so this study purposed to estimate the manufacturing process through the division of micro structure and assess the technique of manufacture iron artifacts from a viewpoint of metal engineering.
-
최병학,이범규,심종헌,고형순,조남철,이재성,박경균,김유찬,Choe, Byung Hak,Lee, Bum Gyu,Shim, Jong Hun,Go, Hyung Soon,Jo, Nam Chul,Lee, Jae Sung,Park, Kyung Gyun,Kim, Yu Chan 한국재료학회 2016 한국재료학회지 Vol.26 No.10
The aim of this paper is to consider the effect of the manufacturing processes on corrosion and centerline cracking of ancient bronze spoons. The ancient bronze spoons in question were made by several steps of forging, in reheated condition with cast ingots. The manufacturing method is similar to that of the modern spoons. The investigations include observations from light and scanning electron microscopes of the microstructure in terms of the crack propagation. Cracks in the centerline are caused by solute segregation in the center-line region; this solute is solidified in the final stage of bronze spoon manufacture. Centerline cracking is also caused by ${\alpha}$ phase segregation, accompanied by forged overlapping along the longitudinal direction of the spoons. A vertical stripe with cracks along the centerline of the spoon's width is formed by folding in the wrought process. The overlapping area causes crack propagation with severe corrosion on the spoon surfaces over a period of a thousand years. The failure mechanisms of ancient bronze spoons may be similar to that of modern spoons, and the estimation of the failure mechanisms of ancient spoons can be appropriate to determine failure causes for such modern spoons.
ScienceON연관 검색어 추천
이 검색어로 많이 본 자료
활용도 높은 자료
