hengong-bar
球墨铸铁、蠕墨铸铁_百度文库
2016年4月6日 ... 灰铸铁、可锻铸铁、蠕墨铸铁和球墨铸铁性能特点 灰铸铁：中石墨为片状，因在片状 石墨两尖端易引起应力集中，诱发裂纹产生而致脆裂，故力学性能 ...
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