EFFECTS OF N ON CREEP PROPERTIES OF AUSTENI-TIC HEAT-RESISTANT CAST STEELS DEVELOPEDFOR EXHAUST COMPONENT APPLICATIONSAT 1000 ℃

To comply with more stringent environmental and fuel consumption regulations in recent years, automotive gasoline engines equipped with turbochargers are increasingly used to improve fuel efficiency. As a result, exhaust gas temperatures are now reaching 1050 °C, about 200 °C higher than the conventional temperature. Hence, there is an urgent demand in automobile industries to develop novel and economic austenitic heat-resistant *福特与中国大学合作研究资助项目 收到初稿日期: 2015-12-03,收到修改稿日期: 2016-03-03 作者简介:张银辉,男, 1985年生,博士生 DOI: 10.11900/0412.1961.2015.00618