Effect of pre-injection thermo-mechanical treatment on helium embrittlement of Fe-(25–40)Ni-15Cr austenitic alloys
Effect of pre-injection thermo-mechanical treatment on helium embrittlement of Fe-(25–40)Ni-15Cr austenitic alloys
复制标题
预注射形变热处理对 Fe-(25–40)Ni-15Cr 奥氏体合金氦脆的影响
DOI：
10.1016/0022-3115(83)90223-4
复制
发表时间：
1983
影响因子：
3.1
通讯作者：
T. Shikata
中科院分区：
文献类型：
--
作者：
H. Shiraishi;N. Yamamoto;H. Shinno;H. Yoshida;H. Kamitsubo;I. Kohno;T. Shikata
用氦注入法和回旋加速器研究了预注氦处理对添加和不加钛、Nb的Fe-(25-40)Ni-Cr奥氏体合金氦脆的影响。对于用γ‘-Ni3(Ti，Al)和γ“-Ni3Nb制备的沉淀硬化合金，注氦材料的总延伸率随着抗拉强度的增加而迅速下降。通过对同一合金在相同强度水平下不同处理方式的比较，得出冷加工、时效等预注射处理对延性有一定的改善作用。对于非淬火合金，316不锈钢和Fe-25Ni-15Cr合金的氦脆程度大致相同，但当Ni含量增加到35%时，固溶处理条件下的总延伸率下降得更严重。冷加工对注氦材料塑性的改善作用随镍含量的增加而降低。
The effect of pre-injection treatments on helium embrittlement of Fe-(25–40)Ni-Cr austenitic alloys with and without the addition of Ti and Nb was widely investigated using the helium injection method and a cyclotron. For the precipitation hardened alloys produced using γ′-Ni3(Ti,Al) and γ″-Ni3Nb, the total elongation of helium injected materials rapidly decreased with increase of tensile strength. By comparing the same alloy under various treatments at the same strength level, the pre-injection treatments, such as cold work and aging, were concluded to have a beneficial effect on the ductility. For the non-hardenable alloys, the degree of helium embrittlement is about the same order in 316 stainless steel and Fe-25Ni-15Cr alloys, but increasing Ni content to 35% caused a more severe reduction of total elongation for the solution treated condition. The ductility improving effect of cold work on the helium injected materials decreased with increase of Ni content.