This study is to develop an export 1050MPa-class lightweight ductile iron castings Austempered control arm through the research process to obtain the following results. First, the structure of the optimal design Layout design and development of the component, and then achieve them through the Control Arm rigidity and optimal structure design and robust design of the focus areas of the expected stress Control Arm. Second, to develop a Control Arm reflects the high rigidity and high performance lightweight structures. Control Arm them developed to meet the design and rigidity as required by the consumer through the hollow, and to develop a process for the Core. Third, through optimum alloy composition and heat treatment methods will be derived to derive the amount of iron alloy (Cu, Ni, Mo) and Austempered heat treated and tempered condition. Fourth, through the development of optimum molding technology development component to develop the optimum ADI for the low-stiffness, high-rigidity component development, it attempts to develop a high-strength casting forming technology.

Abstract
 1. 서 론
 2. 본 론
  2.1 개발 필요성
  2.2 개발 기술의 독창성 및 도전성
  2.3 기술적 파급효과
  2.4 국내외 관련기술 현황
  2.5 개발 준비현황(선행연구 결과 및 애로사항)
 3. 향후 개발 목표
 References

• 이정익(Department of Mechanical Design Engineering, Inha Technical College) | Jeong-Ick Lee Corresponding Author