CAJ | 학술논문

为研究应变强化对奥氏体不锈钢拉伸力学性能的影响，从而为应变强化深冷容器的设计提供一定的数据支撑。以奥氏体不锈钢S30408为研究对象，采用不同的试样加工方法，对不同预拉伸程度的试样，进行常温下恒定速率的拉伸试验。研究表明：把板材先加工成试样，再进行预拉伸处理，然后拉断，材料的抗拉强度基本不变，且预拉伸程度越高，材料的屈服强度越高，断后伸长率和截面收缩率越低；把板材先进行预拉伸处理，再加工成试样，然后拉断，试样的抗拉强度和未预拉伸时的抗拉强度成正比。
위연구응변강화대오씨체불수강랍신역학성능적영향，종이위응변강화심랭용기적설계제공일정적수거지탱。이오씨체불수강S30408위연구대상，채용불동적시양가공방법，대불동예랍신정도적시양，진행상온하항정속솔적랍신시험。연구표명：파판재선가공성시양，재진행예랍신처리，연후랍단，재료적항랍강도기본불변，차예랍신정도월고，재료적굴복강도월고，단후신장솔화절면수축솔월저；파판재선진행예랍신처리，재가공성시양，연후랍단，시양적항랍강도화미예랍신시적항랍강도성정비。
To investigate the influence of pre -loading on mechanical behavior of austenitic stainless steel during tensile experiment,then it is important to provide data for the design of cold stretched austenitic stainless steel.S30408 austenitic stainless steels which were under different pre -loadings and different processing methods for research were conducted at room temperature at certain strain rates .Results show that the tensile strength of specimen which are made from plate ,then tension specimen to a specific strain,is nearly unchanged.Along with the increasing pre -loadings,yield strength increases and the plas-tic of material reduces.However,the tensile strength of specimen which are made from plate with pre -loading is proportional to the original without pre -loading.